How Long, O Lord? – Psalm 13

To the chief Musician, A Psalm of David.

Psa 13:1  How long wilt thou forget me, O LORD? for ever? how long wilt thou hide thy face from me? 
Psa 13:2  How long shall I take counsel in my soul, having sorrow in my heart daily? how long shall mine enemy be exalted over me? 
Psa 13:3  Consider and hear me, O LORD my God: lighten mine eyes, lest I sleep the sleep of death; 
Psa 13:4  Lest mine enemy say, I have prevailed against him; and those that trouble me rejoice when I am moved. 
Psa 13:5  But I have trusted in thy mercy; my heart shall rejoice in thy salvation. 
Psa 13:6  I will sing unto the LORD, because he hath dealt bountifully with me.