For he hath broken - This is the reason given for thanks to God for his deliverance of the captives. It was not a simple deliverance; it was done so as to manifest the irresistible power of God. He tore the prison in pieces, and cut the bars of iron asunder.

Judges 16:3 And Samson lay till midnight, and arose at midnight, and took the doors of the gate of the city, and the two posts...

Isaiah 45:1,2 Thus said the LORD to his anointed, to Cyrus, whose right hand I have held, to subdue nations before him...

Micah 2:13 The breaker is come up before them: they have broken up, and have passed through the gate, and are gone out by it...

Thankfulness for Mercies Received, a Necessary Duty
Numberless marks does man bear in his soul, that he is fallen and estranged from God; but nothing gives a greater proof thereof, than that backwardness, which every one finds within himself, to the duty of praise and thanksgiving. When God placed the first man in paradise, his soul no doubt was so filled with a sense of the riches of the divine love, that he was continually employing that breath of life, which the Almighty had not long before breathed into him, in blessing and magnifying that all-bountiful, …
George Whitefield—Selected Sermons of George Whitefield

Effects of Messiah's Appearance
The eyes of the blind shall be opened, and the ears of the deaf shall be unstopped: Then shall the lame man leap as an hart, and the tongue of the dumb sing. H ow beautiful and magnificent is the imagery, by which the Prophet, in this chapter, represents the effects of MESSIAH'S appearance! The scene, proposed to our view, is a barren and desolate wilderness. But when He, who in the beginning said, Let there be light, and there was light, condescends to visit this wilderness, the face of nature is …
John Newton—Messiah Vol. 1

Concerning Christian Liberty
CHRISTIAN faith has appeared to many an easy thing; nay, not a few even reckon it among the social virtues, as it were; and this they do, because they have not made proof of it experimentally, and have never tasted of what efficacy it is. For it is not possible for any man to write well about it, or to understand well what is rightly written, who has not at some time tasted of its spirit, under the pressure of tribulation. While he who has tasted of it, even to a very small extent, can never write, …
Martin Luther—First Principles of the Reformation