How Long, Lord? - Psalm 13:1-6

The psalmist complains that God had long withdrawn. 

God sometimes hides his face, and leaves his own children in the dark concerning their interest in him: and this they lay to heart more than any outward trouble whatever. But anxious cares are heavy burdens with which believers often load themselves more than they need. It is a common temptation, when trouble lasts long, to think that it will last always. 

Those who have long been without joy, begin to be without hope. 

If we bring our cares and griefs to the throne of grace, and leave them there, we may go away like Hannah, and our countenances will be no more sad, 1Sa 1:18. adapted from Matthew Henry's Concise Bible Commentary