Psalms 144:1

1.Blessed be Jehovah, my strength (257) It is very evident that David, since he celebrates the favor of God in such high terms, had not only obtained the kingdom, but gained signal victories. When he calls God his strength, he acknowledges that any courage he had was given him from above, not only because he had been made from a country shepherd a mighty warrior, but because the constancy and perseverance he had shown was signally a gift from God. This term answers better than were we to translate it rock; for, by way of explanation, he adds immediately afterwards, that he had been formed under God’s teaching for war. The words certainly imply an acknowledgment, that though of a warlike spirit, he was not born for warlike enterprises but needed to undergo a change. What kind of a commencement, for example, did he show in the case of Goliah? That attempt would have been preposterous on any other supposition than his being upheld by secret divine support, so as to be independent of mere human help. (1 Samuel 17:40.)