“As for me, I am poor and needy, but the Lord takes thought for me. You are my help and my deliverer; do not delay, O my God!” (Psalm 40:17, ESV).
David’s confidence in God’s deliverance does not make him lackadaisical in petitioning divine aid. On the contrary, his assurance of God’s mercy (v.11) leads directly to acknowledging the perils of his situation (v.12), and to earnest pleas for God’s salvation (vv.13-15) and the satisfaction of the righteous (v.16). He ends the psalm with a final reflection on his need for God’s salvation, praying that the Lord would reach down to him once more (v.17).
God is not limited by our weakness. Our own insufficiency may be used by the Lord to draw us to Him, and remind us of our dependence upon our Maker and Savior. In your weaknesses, fears, failings, in daily needs and desperations, turn to Jesus—your mighty and merciful Savior.