Charles H. Spurgeon on Psalms 89:30

A man may forsake the doctrines of the Gospel. He may fall into great errors, great aberrations from Truth; he may forsake the ordinances of the Lord's house, though he sees God's word is clear upon the point. He esteems those things as nothing worth, which the Lord esteems so well, that he has given them to his church as a sacred deposit, which she is to convey down to the last posterity till time shall be no more. And what is still more —a man may forsake for a time the principles of the precious Gospel of the living God. But I can imagine a state still more solemnly affecting than even this. It is a part of God's wisdom, (and it is for our good that it is so —all God's wisdom is for his people's good) —it is a part of the wisdom of God, that sin should lead to sin; that one neglect shall pave the way to another; that that which is bad shall lead to that which is worse, and that which is worse shall prepare the way for that which is worst...The longer I live, the more I am brought to this —to know that there is not a sin that ever was committed, but I need the grace of God to keep me from it. —James Harrington Evans.

Verses 30-34. God here says two things: first, that he will chastise them, next, that he will not, on that account, cast them out of his covenant. O wonderful tempering of the kindness and severity of God! In which he finds his own glory, and believers their safety! The heavenly Father loves the blood and marks of his Christ which he sees upon them, and the remains of faith and godliness which are preserved hidden in the depth of their heart, this is why he will not cast them off. On the other hand, he considers that it accords neither with his wisdom nor his holiness to bestow his grace and salvation upon those who do not relent for having cast off his law and given themselves up to iniquity. In order to harmonize these opposite desires, he takes the rod, and chastises them, to arouse their conscience, and to excite their faith; to restore them, by the repentance which his discipline produces, to such a state, as that he may be able to bestow upon them, without shame, the blessings he has promised to the children of his Son; just as a wise parent, by moderate and judicious correction gradually draws back his son from those irregularities of life into which he has plunged; and thereby preserves his honour, and himself the pleasure of being able to love and please him without misgiving. Or, as a skilful surgeon, by the pain which his knife, or cautery, or bitter potions, cause his patient, saves his life, and wards off death. —Jean Daille.

Verses 30-34. When our heavenly Father is, as it were, forced to put forth his anger, he then makes use of a father's rod, not an executioner's axe. He will neither break his children's bones, nor his own covenant. He lashes in love, in measure, in pity, and compassion. —Thomas Lye, 1621-1684.