Vs. 122 — Be surety for Your servant for good; Do not let the proud oppress me.
But as from the last clause of the verse it is obvious that David here desires succour against his enemies, the verb Become surety is the more appropriate rendering.1 Lord, as if he had said, since the proud cruelly rush upon me to destroy me, interpose thyself between us, as if thou wert my surety. … The prayer is to this effect, That God would not suffer the wicked to exercise their cruelty against us at their pleasure, but that he would interpose as a defender to save us. By these words the Prophet intimates, that he was in extreme danger, and that he had nothing else left him in which to hope but the help of God. (Calvin, J., & Anderson, J. (2010). Commentary on the Book of Psalms (Vol. 5, p. 3). Bellingham, WA: Logos Bible Software.)
In You, my God, I do put my trust. I put my trust in no one else, nothing of this world, no other so-called god, but in You alone! The proud may boast, scoff, and shoot threatening arrows; they may blaspheme Your name and scheme to outlaw and destroy the civil liberty to worship You. Even if, or I should say, as they work to suppress and oppress the praises and proclamation of the Gospel of Christ Jesus, they cannot stop You. Their works will only feed their destruction and advance the word of salvation. Although they hate truth, it will not go away! You are our surety!