Matthew 17:21
Berean Standard Bible
The Berean Standard Bible source has no numbered verse at this reference. Read the King James Version below.
King James Version
Howbeit this kind goeth not out but by prayer and fasting.
World English Bible
But this kind doesn’t go out except by prayer and fasting.”
NU omits verse 21.
Read in context
Matthew 17:19–23 · Berean Standard Bible
19 Afterward the disciples came to Jesus privately and asked, “Why couldn’t we drive it out?”
20 “Because you have so little faith,” He answered. “For truly I tell you, if you have faith the size of a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.”
22 When they gathered together in Galilee, Jesus told them, “The Son of Man is about to be delivered into the hands of men.
23 They will kill Him, and on the third day He will be raised to life.” And the disciples were deeply grieved.
Read all of Matthew 17What the commentators said
Matthew Henry: Concise Commentary
Matthew Henry, Concise Commentary, Matthew 17:14-21. Public domain.
John Calvin: Commentaries
21. This kind goeth not out, “Cest espece [de diablos] ne sort point;” — “this kind [of devils] goeth not out.” By this expression Christ reproved the negligence of certain persons, in order to inform them that it was not an ordinary faith which was required; for otherwise they might have replied that they were not altogether destitute of faith The meaning therefore is, that it is not every kind of faith that will suffice, when we have to enter into a serious conflict with Satan, but that vigorous efforts are indispensably necessary. For the weakness of faith he prescribes prayer as a remedy, to which he adds fasting by way of an auxiliary. “You are effeminate exorcist,” said he, “and seem as if you were engaged in a mock-battle got up for amusement; “Vous y venez ainsi qu’a un combat de petits enfans, et comme s’il n’estoit question que de s’escarmoucher pour passe-temps.” — “You come to it as if it were to a fight of little children, and as if you had nothing to do but to skirmish for amusement.” but you have to deal with a powerful adversary, who will not yield till the battle has been fought out. Your faith must therefore be excited by prayer, and as you are slow and languid in prayer, you must resort to fasting as an assistance.” “Comme une aide pour vous exciter et enflamber;” — “as an assistance to excite and inflame you.” Hence it is very evident how absurdly the Papists represent fasting to be the specific method of driving away devils, since our Lord refers to it for no other reason than to stimulate the earnestness of prayer. When he says that this kind of devils cannot be cast out in any other way than by prayer and fasting, he means that, when Satan has taken deep root in any one, and has been confirmed by long possession, or when he rages with unbridled fury, the victory is difficult and painful, and therefore the contest must be maintained with all our might.
Matthew 17:22-23, 18:1-5; Mark 9:30-37; Luke 9:43-48
Matthew 17:22-23
Mark 9:30-36
Luke 9:43-48
22. And while they remained in Galilee, Jesus said to them, The Son of man will be delivered into the hands of men: 23. And they will kill him, and on the third day he will rise again. And they were deeply grieved.
Matthew 18:1-5
1. At that time the disciples came to Jesus, saying, Who is the greatest in the kingdom of heaven? 2. And Jesus, having called a little child to him, placed him in the midst of them, 3. And said, Verily I say to you, Unless you be converted, and become as little children, you shall not enter into the kingdom of heaven. 4. Whosoever then shall humble himself like this little child, he is the greatest in the kingdom of heaven. 5. And whosoever shall receive such a little child in my name receiveth me.
30. And departing thence, they passed through Galilee, and he was desirous that nobody should know it. 31. For he taught his disciples, and said to them, The Son of man is delivered into the hands of men, and they will kill him; and, after being killed, he will arise on the third day. 32. but they knew not what he said, and were afraid to ask him. 33. And he came to Capernaum; “Apres ces choses il veint en Capernaum;” — “after these things he came to Capernaum.” and when he was come into the house, he asked them, What were you disputing about among yourselves on the road? 34. But they were silent; for they had disputed among themselves by the way who was the greatest. 35. And when he had sat down, he called the twelve, and said to them, If any man choose to be first, he shall be last of all, “Il sera (ou, qu’il soit) le dernier de tous;” — “he shall be (or, let him be) servant of all.” and servant of all. 36. And he took a child, and placed him in the midst of them; and when he had taken him in his arms, he said to them, 37. Whosoever shall receive one of such children in my name receiveth me; and whosoever receiveth me receiveth not me, but him that sent me.
43. But while all were wondering at everything that he did, he said to his disciples, 44. Put these words in your ears; for the Son of man shall be delivered into the hands of men. 45. But they understood not that saying, and it was hidden from them, so that they did not perceive it, and they were afraid to ask him concerning this saying. 46. And a dispute arose among them, which of them was the greatest. 47. But Jesus, seeing the thought of their heart, took a child, and placed him near him, 48. And said to them, Whosoever shall receive this child in my name receiveth me; and whosoever shall receive me receiveth him that sent me; for he that is least among you all shall be great.
John Calvin, Commentaries, Matthew 17:21. Public domain.
Albert Barnes: Notes on the New Testament
This narrative, with some additions, is found in Mk 9:14-29, Lk 9:37-43.
Albert Barnes, Notes on the New Testament, Matthew 17:14-21. Public domain.
Albert Barnes: Notes on the New Testament
Howbeit this kind, etc. This kind means this kind of devils; this species of possession. Where they have had long possession; where they produce such painful, and fixed, and alarming effects, they can be expelled only in connexion with prayer and fasting.
Goeth not out but by prayer and fasting. That is, in order to work miracles of this kind, to cast out devils in cases so obstinate and dreadful as this, faith of the highest kind is necessary. That faith is produced and kept vigorous only by much prayer, and by such abstinence from food as fits the mind for the highest exercises of religion, and leaves it free to hold communion with God.
Albert Barnes, Notes on the New Testament, Matthew 17:21. Public domain.
Adam Clarke: Commentary and Critical Notes
This kind goeth not out but by prayer, etc. - Τουτο το γενος, this kind, some apply to the faith which should be exercised on the occasion, which goeth not out, doth not exert itself, but by prayer and fasting; but this interpretation is, in my opinion, far from solid. However, there is great difficulty in the text. The whole verse is wanting in the famous Vatican MS., one of the most ancient and most authentic perhaps in the world; and in another one of Colbert's, written in the 11th or 12th century. It is wanting also in the Coptic, Ethiopic, Syriac, Hieros., and in one copy of the Itala. But all the MSS. acknowledge it in the parallel place, Mar 9:29, only the Vatican MS. leaves out νηϚεια, fasting. I strongly suspect it to be an interpolation; but, if it be, it is very ancient, as Origen, Chrysostom, and others of the primitive fathers, acknowledged it. But while candour obliges me to acknowledge that I cannot account for the fact here alleged, that a certain class or genus of demons cannot be expelled but by prayer and fasting, while others may be ejected without them, I can give a sense to the passage which all my readers will easily understand: viz. that there are certain evil propensities, in some persons, which pampering the flesh tends to nourish and strengthen; and that self-denial and fasting, accompanied by prayer to God, are the most likely means, not only to mortify such propensities, but also to destroy them. For other remarkable circumstances relative to this case, see the notes on Mar 9:17, etc.
Adam Clarke, Commentary and Critical Notes, Matthew 17:21. Public domain.
John Wesley: Explanatory Notes
This kind of devils - goeth not out but by prayer and fasting - What a testimony is here of the efficacy of fasting, when added to fervent prayer! Some kinds of devils the apostles had cast out before this, without fasting.
John Wesley, Explanatory Notes, Matthew 17:21. Public domain.
Matthew Poole and continuators: Annotations upon the Holy Bible
21 Howbeit this kind goeth not out, but by prayer and fasting.
Mark repeats only what we have here, v. 19.21. The Reason assigned here by our Saviour, why his Disciples could not cast out this Devil; was their Vnbelief, not their total want, but the Weakness of their Faith. Christ here again lets us see the Power of Faith, and the mischief of Vnbelief. I take the plain Sense of the Text to be this, That there is nothing, which may tend to the Glory of God, or to our good, but may be obtained of God, by a firm Exercise of Faith in him; whether our Saviour here speaketh of a Faith of Miracles, or no, I will not determine, I rather think, that he speaketh here of any true Faith; we must have the Power and Promise of God for its Object. The Promise of working Miracles by a Divine Power committed to them, was a particular Promise made to the Disciples, Mat. 10. and so was only the Object of their Faith. But I take our Saviours words to extend to a further Latitude, tho as to Miraculous Operations, it was only applicable to them. There is nothing which God hath Promised to give or bestow on any, but Faith will obtain from him, if attended by a fervent Prayer, to which Fasting is subservient, as preparing us to it. There are some things, which are obtained by a stronger Faith, and by more fervent and importunate Prayers than others are: A Mercy sometimes seem to us, to come out of the Hand of God with more Difficulty, and Wrestling for it, but there is nothing within the Latitude of a Promise, but is to be done, and obtained by the vigorous Exercise of Faith, and by fervent and importunate Prayer. The Apostles had yet but a weak and imperfect Faith, and they had not used such fervent and importunate Prayer in this Case, as they ought to have done, thence did this work appear so Difficult unto them.
Matthew Poole and continuators, Annotations upon the Holy Bible, Matthew 17:21. Public domain.
Matthew Henry and continuators: Complete Commentary
The Expulsion of a Demon.
14 And when they were come to the multitude, there came to him a certain man, kneeling down to him, and saying, 15 Lord, have mercy on my son: for he is lunatic, and sore vexed: for ofttimes he falleth into the fire, and oft into the water. 16 And I brought him to thy disciples, and they could not cure him. 17 Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? how long shall I suffer you? bring him hither to me. 18 And Jesus rebuked the devil; and he departed out of him: and the child was cured from that very hour. 19 Then came the disciples to Jesus apart, and said, Why could not we cast him out? 20 And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you. 21 Howbeit this kind goeth not out but by prayer and fasting.
We have here the miraculous cure of a child that was lunatic and vexed with a devil. Observe,
I. A melancholy representation of the case of this child, made to Christ by the afflicted father. This was immediately upon his coming down from the mountain where he was transfigured. Note, Christ's glories do not make him unmindful of us and of our wants and miseries. Christ, when he came down from the mount, where had conversation with Moses and Elias, did not take state upon him, but was as easy of access, as ready to poor beggars, and as familiar with the multitude, as ever he used to be. This poor man's address was very importunate; he came kneeling to Christ. Note, Sense of misery will bring people to their knees. Those who see their need of Christ will be earnest, will be in good earnest, in their applications to him; and he delights to be thus wrestled with.
Two things the father of the child complains of.
1. The distress of his child (v. 15); Lord have mercy on my son. The affliction of the children cannot but affect the tender parents, for they are pieces of themselves. And the case of afflicted children should be presented to God by faithful and fervent prayer. This child's distemper, probably, disabled him to pray for himself. Note, Parents are doubly concerned to pray for their children, not only that are weak and cannot, but much more that are wicked and will not, pray for themselves. Now, (1.). The nature of this child's disease was very sad; He was lunatic and sore vexed. A lunatic is properly one whose distemper lies in the brain, and returns with the change of the moon. The devil, by the divine permission, either caused this distemper, or at least concurred with it, to heighten and aggravate it. The child had the falling-sickness, and the hand of Satan was in it; by it he tormented then, and made it much more grievous than ordinarily it is. Those whom Satan got possession of, he afflicted by those diseases of the body which do most affect the mind; for it is the soul that he aims to do mischief to. The father, in his complain, saith, He is lunatic, taking notice of the effect; but Christ, in the cure, rebuked the devil, and so struck at the cause. Thus he doth in spiritual cures. (2.) The effects of the disease were very deplorable; He oft falls into the fire, and into the water. If the force of the disease made him to fall, the malice of the devil made him to fall into the fire or water; so mischievous is he where he gains possession and power in any soul. He seeks to devour, 1 Pet. v. 8.
2. The disappointment of his expectation from the disciples (v. 16); I brought him to thy disciples, and they could not cured him. Christ gave his disciples power to cast out devils (ch. x. 1, 8), and therein they were successful (Luke x. 17); yet at this time they failed in the operation, though there were nine of them together, and before a great multitude. Christ permitted this, (1.) To keep them humble, and to show their dependence upon him, that without him they could do nothing. (2.) To glorify himself and his own power. It is for the honour of Christ to come in with help at a dead-lift, when other helpers cannot help. Elisha's staff in Gehazi's hand will not raise the child: he must come himself. Note, There are some special favours which Christ reserves the bestowment of to himself; and sometimes he keeps the cistern empty; that he may bring us to himself, the Fountain. But the failures of instruments shall not hinder the operations of his grace, which will work, if not by them, yet without them.
II. The rebukes that Christ gave to the people first, and then to the devil.
1. He chid those about him (v. 17); O faithless and perverse generation! This is not spoken to the disciples, but to the people, and perhaps especially to the scribes, who are mentioned in Mark ix. 14, and who, as it should seem, insulted over the disciples, because they had now met with a case that was too hard for them. Christ himself could not do many mighty works among a people in whom unbelief reigned. It was here owing to the faithlessness of this generation, that they could not obtain those blessings from God, which otherwise they might have had; as it was owing to the weakness of the disciples' faith, that they could not do those works for God, which otherwise they might have done. They were faithless and perverse. Note, Those that are faithless will be perverse; and perverseness is sin in its worst colours. Faith is compliance with God, unbelief is opposition and contradiction to God. Israel of old was perverse, because faithless (Ps. xcv. 9), forward, for in them is no faith, Deut. xxxii. 20.
Two things he upbraids them with. (1.) His presence with them so long; "How long shall I be with you? Will you always need my bodily presence, and never come to such maturity as to be fit to be left, the people to the conduct of the disciples, and the disciples to the conduct of the Spirit and of their commission? Must the child be always carried, and will it never learn to go alone?" (2.) His patience with them so long; How long shall I suffer you? Note, [1.] The faithlessness and perverseness of those who enjoy the means of grace are a great grief to the Lord Jesus. Thus did he suffer the manners of Israel of old, Acts xiii. 18. [2.] The longer Christ has borne with a perverse and faithless people, the more he is displeased with their perverseness and unbelief; and he is God, and not man, else he would not suffer so long, nor bear so much, as he doth.
2. He cured the child, and set him to-rights again. He called, Bring him hither to me. Though the people were perverse, and Christ was provoked, yet care was taken of the child. Note, Though Christ may be angry, he is never unkind, nor doth he, in the greatest of his displeasure, shut up the bowels of his compassion from the miserable; Bring him to me. Note, When all other helps and succours fail, we are welcome to Christ, and may be confident in him and in his power and goodness.
See here an emblem of Christ's undertaking as our Redeemer.
(1.) He breaks the power of Satan (v. 18); Jesus rebuked the devil, as one having authority, who could back with force his word of command. Note, Christ's victories over Satan are obtained by the power of his word, the sword that comes out of his mouth, Rev. xix. 21. Satan cannot stand before the rebukes of Christ, though his possession has been ever so long. It is comfortable to those who are wrestling with principalities and powers, that Christ hath spoiled them, Colos. ii. 15. The lion of the tribe of Judah will be too hard for the roaring lion that seeks to devour.
(2.) He redresses the grievances of the children of men; The child was cured from that very hour. It was an immediate cure, and a perfect one. This is an encouragement to parents to bring their children to Christ, whose souls are under Satan's power; he is able to heal them, and as willing as he is able. Not only bring them to Christ by prayer, but bring them to the word of Christ, the ordinary means by which Satan's strongholds are demolished in the soul. Christ's rebukes, brought home to the heart, will ruin Satan's power there.
III. Christ's discourse with his disciples hereupon.
1. They ask the reason why they could not cast out the devil at this time (v. 19); They came to Jesus apart. Note, Ministers, who are to deal for Christ in public, have need to keep up a private communion with him, that they may in secret, where no eye sees, bewail their weakness and straitness, their follies and infirmities, in their public performances, and enquire into the cause of them. We should make use of the liberty of access we have to Jesus apart, where we may be free and particular with him. Such questions as the disciples put to Christ, we should put to ourselves, in communing with our own hearts upon our beds; Why were we so dull and careless at such a time? Why came we so much short in such a duty? That which is amiss may, when found out, be amended.
2. Christ gives them two reasons why they failed.
(1.) It was because of their unbelief, v. 20. When he spake to the father of the child and to the people, he charged it upon their unbelief; when he spake to his disciples, he charged it upon theirs; for the truth was, there were faults on both sides; but we are more concerned to hear of our own faults than of other people's, and to impute what is amiss to ourselves than to others. When the preaching of the word seems not to be so successful as sometimes it has been, the people are apt to lay all the fault upon the ministers, and the ministers upon the people; whereas, it is more becoming for each to own his own faultiness, and to say, "It is owing to me." Ministers, in reproving, must learn thus to give to each his portion of the word; and to take people off from judging others, by teaching all to judge themselves; It is because of your unbelief. Though they had faith, yet that faith was weak and ineffectual. Note, [1.] As far as faith falls short of its due strength, vigour, and activity, it may truly be said, "There is unbelief." Many are chargeable with unbelief, who yet are not to be called unbelievers. [2.] It is because of our unbelief, that we bring so little to pass in religion, and so often miscarry, and come short, in that which is good.
Our Lord Jesus takes this occasion to show them the power of faith, that they might not be defective in that, another time, as they were now; If ye have faith as a grain of mustard-seed, ye shall do wonders, v. 20. Some make the comparison to refer to the quality of the mustard-seed, which is, when bruised, sharp and penetrating; "If you have an active growing faith, not dead, flat, or insipid, you will not be baffled thus." But it rather refers to the quantity; "If you had but a grain of true faith, though so little that it were like that which is the least of all seeds, you would do wonders." Faith in general is a firm assent to, a compliance with, and a confidence in, all divine revelation. The faith here required, is that which had for its object that particular revelation by which Christ gave his disciples power to work miracles in his name, for the confirmation of the doctrine they preached. It was a faith in this revelation that they were defective in; either doubting the validity of their commission, or fearing that it expired with their first mission, and was not to continue when they were returning to their Master; or that it was some way or other forfeited or withdrawn. Perhaps their Master's absence with the three chief of his disciples, with a charge to the rest not to follow them, might occasion some doubts concerning their power, or rather the power of the Lord with them, to do this; however, there were not, at present, such a strong actual dependence upon, and confidence in, the promise of Christ's presence with them, as there should have been. It is good for us to be diffident of ourselves and of our own strength; but it is displeasing to Christ, when we distrust any power derived from him or granted by him.
If ye have ever so little of this faith in sincerity, if ye truly rely upon the powers committed to you, ye shall say to this mountain, Remove. This is a proverbial expression, denoting that which follows, and no more, Nothing shall be impossible to you. They had a full commission, among other things, to cast out devils without exception; but, this devil being more than ordinarily malicious and inveterate, they distrusted the power they had received, and so failed. To convince them of this, Christ shows them what they might have done. Note, An active faith can remove mountains, not of itself, but in the virtue of a divine power engaged by a divine promise, both which faith fastens upon.
(2.) Because there was something in the kind of the malady, which rendered the cure more than ordinarily difficult (v. 21); "This kind goes not out but by prayer and fasting. This possession, which works by a falling-sickness, or this kind of devils that are thus furious, is not cast out ordinarily but by great acts of devotion, and wherein ye were defective." Note, [1.] Though the adversaries we wrestle, be all principalities and powers, yet some are stronger than others, and their power more hardly broken. [2.] The extraordinary power of Satan must not discourage our faith, but quicken us to a greater intenseness in the acting of it, and more earnestness in praying to God for the increase of it; so some understand it here; "This kind of faith (which removeth mountains) doth not proceed, is not obtained, from God, nor is it carried up to its full growth, nor drawn out into act and exercise, but by earnest prayer." [3.] Fasting and prayer are proper means for the bringing down of Satan's power against us, and the fetching in of divine power to our assistance. Fasting is of use to put an edge upon prayer; it is an evidence and instance of humiliation which is necessary in prayer, and is a means of mortifying some corrupt habits, and of disposing the body to serve the soul in prayer. When the devil's interest in the soul is confirmed by the temper and constitution of the body, fasting must be joined with prayer, to keep under the body.
Matthew Henry and continuators, Complete Commentary, Matthew 17:14-21. Public domain.
John Lightfoot: Horae Hebraicae et Talmudicae
[This kind goeth not out but by prayer and fasting.] It is not much unlike this, which is said, By reason of an evil spirit a singular or religious man may afflict himself with fastings.
John Lightfoot, Horae Hebraicae et Talmudicae, Matthew 17:21. Public domain.
J. C. Ryle: Expository Thoughts on Matthew (1860)
We read in this passage another of our Lord’s great miracles. He heals a young man lunatic and possessed with a devil.
The first thing we see in these verses is a lively emblem of the awful influence sometimes exercised by Satan over the young. We are told of a certain man’s son, who was “lunatic and sore vexed.” We are told of the evil spirit pressing him on to the destruction of body and soul: “Oftimes he falleth into the fire and oft into the water.” It was one of those cases of Satanic possession which, however common in our Lord’s times, in our own day is rarely seen; but we can easily imagine that, when they did occur, they must have been peculiarly distressing to the relations of the afflicted. It is painful enough to see the bodies of those we love wracked by disease: how much more painful must it have been to see body and mind completely under the influence of the devil! “Out of hell,” says Bishop Hall, “there could not be greater misery.”
But we must not forget that there are many instances of Satan’s spiritual dominion over young people which are quite as painful, in their way, as the case described in this passage. There are thousands of young men who seem to have wholly given themselves up to Satan’s temptations, and to be led “captive at his will” (2 Timothy ). They cast off all fear of God, and all respect for his commandments; they serve divers lusts and pleasures; they run wildly into every excess of riot; they refuse to listen to the advice of parents, teachers or ministers; they fling aside all regard for health, character or worldly respectability. They do all that lies in their power to ruin themselves, body and soul, for time and eternity: they are willing bond-slaves of Satan. Who has not seen such young men? They are to be seen in town and in country; they are to be found among rich and among poor. Surely such young men give mournful proof that although Satan nowadays seldom has possession of people’s bodies, he still exercises a fearful dominion over some men’s souls.
Yet even about such young men as these be it remembered we must never despair. We must call to mind the almighty power of our Lord Jesus Christ. Bad as this boy’s case was of whom we read in these verses, he was “cured from the very hour” that he was brought to Christ! Parents, and teachers and ministers should go on praying for young men, even at their worst. Hard as their hearts seem now, they may yet be softened: desperate as their wickedness now appears, they may yet be healed. They may yet repent and be converted, like John Newton, and their last state prove better than their first. Who can tell? Let it be a settled principle with us when we read our Lord’s miracles never to despair of the conversion of any soul.
In the second place we see in these verses a striking example of the weakening effect of unbelief. The disciples anxiously inquired of our Lord, when they saw the devil yielding to his power, “Why could not we cast himout?” They received an answer full of the deepest instruction: “Because of your unbelief.” Would they know the secret of their own sad failure in the hour of need? It was want of faith.
Let us ponder this point well and learn wisdom. Faith is the key to success in the Christian warfare. Unbelief is the sure road to defeat. Once let our faith languish and decay, and all our graces will languish with it. Courage, patience, long-suffering and hope will soon wither and dwindle away: faith is the root on which they all depend. The same Israelites who at one time went through the Red Sea in triumph, at another time shrunk from danger like cowards when they reached the borders of the promised land. Their God was the same who had brought them out of the land of Egypt; their leader was the same Moses who had worked so many wonders before their eyes; but their faith was not the same. They gave way to shameful doubts of God’s love and power. “They could not enter in because of unbelief” (Hebrews 3:19).
In the last place we see in these verses that Satan’s kingdom is not to be pulled down without diligence and pains. This seems to be the lesson of the verse which concludes the passage we are now considering: “This kind goeth not out but by prayer and fasting.” A gentle rebuke to the disciples appears to be implied in the words. Perhaps they had been too lifted up by past successes; perhaps they had been less careful in the use of means in their Master’s absence than they were under their Master’s eye. At any rate they receive a plain hint from our Lord that the warfare against Satan must never be lightly carried on. They are warned that no victories are to be won easily over the prince of this world. Without fervent prayer and diligent self-mortification, they would often meet with failure and defeat.
The lesson here laid down is one of deep importance. “I would,” says Bullinger, “that this part of the Gospel pleased us as much as those parts which concede liberty.” We are all apt to contract a habit of doing religious acts in a thoughtless, perfunctory way. Like Israel, puffed up with the fall of Jericho, we are ready to say to ourselves, “The men of Ai are but few.” (Joshua 7:3); “There is no need to put forth all our strength.” Like Israel, we often learn by bitter experience that spiritual battles are not to be won without hard fighting. The ark of the Lord must never be handled irreverently; God’s work must never be carelessly done.
May we all bear in mind our Lord’s words to his disciples, and make a practical use of them. In the pulpit and on the platform, in the Sunday school and in the district, in our use of family prayers and in reading our own Bibles, let us diligently watch our own spirit. Whatever we do, let us do it with our might (Ecclesiastes 9:10). It is a fatal mistake to underrate our foes. Greater is he that is for us than he that is against us, but, for all that, he that is against us is not to be despised. He is the “prince of this world” (John ); he is a “strong man, armed, keeping his house” keeping his house, who will not “go out” and part with his goods without a struggle. “We wrestle not against flesh and blood, but against principalities and powers, (Ephesians 6:12). We have need to take the whole armor of God, and not only to take it, but to use it too. We may be very sure that those who win most victories over the world, the flesh and the devil are those who pray most in private and keep under their bodies and bring them into subjection.( 1 Corinthians 9:27 ).
J. C. Ryle, Expository Thoughts on Matthew (1860), Matthew 17:14-21. Public domain. Text sourced via CCEL.org.
John Trapp: Commentary or Exposition
Verse 21. This kinde goeth not out] Some devils then are not so [illegible: 1 word], politike, vile, villainous, as others: so neither [illegible: 2 words] men all alike wicked; Some stigmaticall [illegible: 1 word] face the heavens, burden the earth, please not God, and are contrary to all men. Others are more tame and tractable, as the young1 [illegible: 1 word]. [illegible: 1 word]. 15. man on whom Christ looked and loved him. Yet, as when one commended the [illegible: 1 word] Legate at the Councel of Basil, Sigismund the Emperour answered, Tamen Romanus [illegible: 1 word]: So though the devil or his slaves seem never so fair conditioned, they are neither to be liked nor trusted: he is a devil still, and will do his kinde: they are wicked still, and [illegible: 1 word] proceedeth from the wicked, as saith [illegible: 1 word] Sam. 24. 13. the Proverb of the Ancients. I have read of one that would [illegible: 1 word] the [illegible: 1 word], theatres and whore-houses in London all day, but he [illegible: 1 word] not go forth without private praier in the morning, and then would say at his departure, Now devil do thy worst: andM. [illegible: 3 words], p. 23 a. so used his praiers as charms and spels against the weak, cowardly devil. This was not that praier and fasting our Saviour here speaks of; men must not go forth to this spirituall fight, [non-Latin text not transcribed], with their break-fast, as the Grecians in Homer, but praying and fasting from sin especially: for otherwise they do but light a candle afore the devil, as the Proverb hath it.
John Trapp, Commentary or Exposition, Matthew 17:21. Public domain.
Confessions citing Matthew 17:21
Study Matthew 17:21
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The case of afflicted children should be presented to God by faithful and fervent prayer. Christ cured the child. Though the people were perverse, and Christ was provoked, yet care was taken of the child. When all other helps and succours fail, we are welcome to Christ, may trust in him, and in his power and goodness. See here an emblem of Christ's undertaking as our Redeemer. It encourages parents to bring children to Christ, whose souls are under Satan's power; he is able to heal them, and as willing as he is able. Not only bring them to Christ by prayer, but bring them to the word of Christ; to means by which Satan's strong-holds in the soul are beaten down. It is good for us to distrust ourselves and our own strength; but it is displeasing to Christ when we distrust any power derived from him, or granted by him. There was also something in the malady which rendered the cure difficult. The extraordinary power of Satan must not discourage our faith, but quicken us to more earnestness in praying to God for the increase of it. Do we wonder to see Satan's bodily possession of this young man from a child, when we see his spiritual possession of every son of Adam from the fall!