2. Samuel 22:17

17 He reached out of the height, He laid hold of me; Drew me out of great waters: 18 Saved me from my enemy strong; From my haters, because they were too strong for me. 19 They fell upon me in my day of calamity: Then Jehovah became my stay, 20 And led me out into a broad place; Delivered me, because He had pleasure in me. The Lord stretched His hand from the height into the deep abysses, which had been uncovered through the threatening of the wrath of God, and drew out the sinking man. ישׁלח without יד is used to denote the stretching out of the hand, and in the sense of reaching out to a thing (as in Sa2 6:6). רבּים מים (great waters) does not refer to the enemy, but to the calamities and dangers (waves of death and streams of Belial, Sa2 22:5) into which the enemies of the Psalmist had plunged him. ימשׁני, from משׁה (Exo 2:10), from which the name of Moses was derived, to whom there is probably an allusion made. As Moses was taken out of the waters of the Nile, so David was taken out of great (many) waters. This deliverance is still further depicted in a more literal terms in Sa2 22:18. עז איבי, my enemy strong, poetical for my strong enemy, does not refer to one single enemy, namely Saul; but, as the parallel "my haters" shows, is a poetical personification of all his enemies. They were stronger than David, therefore the Lord had to deliver him with an almighty hand. The "day of calamity" in which the enemy fell upon him (קדּם: see at Sa2 22:6) was the time when David wandered about in the desert helpless and homeless, fleeing from the pursuit of Saul. The Lord was then his support, or a staff on which he could support himself (vid., Psa 23:4), and led him out of the strait into the broad, i.e., into a broad space where he could move freely, because God had pleasure…

This chapter is a psalm, a psalm of praise; we find it afterwards inserted among David's psalms (Ps. 18) with some little variation. We have it here as it was first composed for his own closed and his own harp; but there we have it as it was afterwards delivered to the chief musician for the service of the church, a second edition with some amendments; for, though it was calculated primarily for David's case, yet it might indifferently serve the devotion of others, in giving thanks for their deliverances; or it was intended that his people should thus join with him in his thanksgivings, because, being a public person, his deliverances were to be accounted public blessings and called for public acknowledgments. The inspired historian, having largely related David's deliverances in this and the foregoing book, and one particularly in the close of the foregoing chapter, thought fit to record this sacred poem as a memorial of all that had been before related. Some think that David penned this psalm when he was old, upon a general review of the mercies of his life and the many wonderful preservations God had blessed him with, from first to last. We should in our praises, look as far back as we can, and not suffer time to wear out the sense of God's favours. Others think that he penned it when he was young, upon occasion of some of his first deliverances, and kept it by him for his use afterwards, and that, upon every new deliverance, his practice was to sing this song. But the book of Psalms shows that he varied as there was occasion, and confined not himself to one form. Here is, I. The title of the psalm (Sa2 22:1). II. The psalm itself, in which, with a very warm devotion and very great fluency and copiousness of expression, 1. He gives glory to God. 2. He takes comfort i…