Charles H. Spurgeon on Psalms 146:7

The Lord looseth the prisoners. As in that place of Isa 61:1 the phrase of "opening the prison to them that are bound", is by the learned thought to be a prophetic elegance, to signify the cure of those that are deaf and dumb, whose souls consequently were shut up from being able to express themselves, as language enables others to do; so here also it may be used poetically, and then it will be directly parallel to that part of Christ's answer, "the deaf hear" (Mt 11:5). At the curing of such, Christ's form of speech was, Ephphatha, "be opened", as to the door of a prison, when those which were under restraint therein were to be let loose out of it, their fetters being shaken off from them. But then, 'tis further manifest, that those that were under any sore disease or lameness, etc., are said to be "bound by Satan" (Lu 13:16), and be "loosed" by Christ, when they were cured by him. So saith Christ (Lu 13:12), "Woman, thou art loosed from thine infirmity: and immediately she was made straight." Her being "made straight" was her being loosed out of her restraint, or bonds, or prison. And in this latitude of the poetic or prophetic expression, the Lord's loosing the prisoners here will comprehend the walking of the lame, the lepers being cleansed, the hearing of the deaf, yea, and the raising up of the dead; for those of all others are fastest bound, and so when they were raised, the style is as proper as to Lazarus in respect of the graveclothes, "loose them, and let him go." —Henry Hammond.

Verses 7-8. It ought not to pass without remark that the name Jehovah is repeated here five times in five lines, to intimate that it is an almighty power, that of Jehovah, that is engaged and exerted for the relief of the oppressed; and that it is as much to the glory of God to succour them that are in misery, as it is to ride on the heavens by his name JAH, Ps 68:4. —Matthew Henry.