Albert Barnes Commentary Psalms 31:14

"But I trusted in thee, O Jehovah: I said, Thou art my God." — Psalms 31:14 (ASV)

But I trust in thee, O Lord — In these times of trial — when (Psalms 31:9) his eye was consumed with grief; when (Psalms 31:10) his years were spent with sighing, his strength failed, and his bones were consumed; when (Psalms 31:11) he was a reproach among his neighbors, and dreaded by his acquaintances; when (Psalms 31:12) he was forgotten as a dead man; and when (Psalms 31:13) he was surrounded with causes of alarm.

Then he trusted in God. His confidence did not fail. He believed that God was his Father and Friend; that He was on the throne; that He could protect and defend him; and he left himself and his cause with Him.

In such circumstances as these, there is no other sure refuge but God. At such times, the strength of faith is shown, and then is seen preeminently the power and value of religion.

I said, Thou art my God — You are all that is implied in the name “God”; and you are mine. He felt assured that God would not forsake him, though men did; that he might confide in Him, though his earthly friends all turned away. There is always one (God) who will not leave or forsake us; and the friendship and favor of that One is of more value to us than that of all other beings in the universe combined.