The Righteous One’s, “Lord, how long?”
 
David began by bemoaning God’s absence when he was under duress from his enemies. He beseeched God not to delay, and complained that it was taking its toll upon him. Yet once again faith surges, and he remembers that God is merciful, and that his salvation is still a cause of rejoicing. Hence, he could compose and sing this psalm because of God’s bounty.
 

Psalm 13

 1  How long wilt thou forget me, Lord?
       shall it for ever be?
    O how long shall it be that thou
       wilt hide thy face from me?

 2  How long take counsel in my soul,
       still sad in heart, shall I?
    How long exalted over me
       shall be mine enemy?

 3  O Lord my God, consider well,
       and answer to me make:
    Mine eyes enlighten, lest the sleep
       of death me overtake:

 4  Lest that mine enemy should say,
       Against him I prevailed;
    And those that trouble me rejoice,
       when I am moved and failed.

 5  But I have all my confidence
       thy mercy set upon;
    My heart within me shall rejoice
       in thy salvation.

 6  I will unto the Lord my God
       sing praises cheerfully,
    Because he hath his bounty shown
       to me abundantly.