Psalms 71:1

Two things in general David here prays for - that he might not be confounded and that his enemies and persecutors might be confounded. I. He prays that he might never be made ashamed of his dependence upon God nor disappointed in his believing expectations from him. With this petition every true believer may come boldly to the throne of grace; for God will never disappoint the hope that is of his own raising. Now observe here, 1. How David professes his confidence in God, and with what pleasure and grateful variety of expression he repeats his profession of that confidence, still presenting the profession of it to God and pleading it with him. We praise God, and so please him, by telling him (if it be indeed true) what an entire confidence we have in him (Psa 71:1): "In thee, O Lord! and in thee only, do I put my trust. Whatever others do, I choose the God of Jacob for my help." Those that are entirely satisfied with God's all-sufficiency and the truth of his promise, and in dependence upon that, as sufficient to make them amends, are freely willing to do and suffer, to lose and venture, for him, may truly say, In thee, O Lord! do I put my trust. Those that will deal with God must deal upon trust; if we are shy of dealing with him, it is a sign we do not trust him.

— Matthew Henry's Concise Commentary (public domain)