John Calvin Commentary Psalms 25:2

"O my God, in thee have I trusted, Let me not be put to shame; Let not mine enemies triumph over me." — Psalms 25:2 (ASV)

O my God! I have put my trust in you. From this verse we learn (what will become clearer later) that David was dealing with men; but since he was persuaded that his enemies were, so to speak, the scourges of God, he rightly asks that God would restrain them by His power, so that they would not become more insolent and continue to exceed all bounds.

By the word trust, he confirms what he had just said about the lifting up of his soul to God; for the term is used either to describe the way in which the souls of the faithful are lifted up, or faith and hope are added as the cause of such an effect—namely, the lifting up of the soul.

Indeed, these are the wings by which our souls, rising above this world, are lifted up to God. David, then, was carried upward to God with the whole desire of his heart because, trusting in His promises, he thus hoped for sure salvation. When he asks that God would not allow him to be put to shame, he offers up a prayer taken from the ordinary doctrine of Scripture: namely, that those who trust in God shall never be ashamed.

The reason that is added, and which he here pleads to move God to have pity on him, should also be noted. It is this: that he would not be exposed to the derision of his enemies, whose pride is no less hurtful to the feelings of the godly than it is displeasing to God.