Have you ever felt like this...? "Save me, O God, for the waters have come up to my neck. I sink in the miry depths, where there is no foothold....I am worn out calling for help..." David goes on to complain about being persecuted by others and confesses his own sin, then says "I am in pain and distress; may your salvation, O God, protect me."
David freed himself from the agony of getting stuck in in the endless loop of "Why"...instead his remarks reflect he knew the answer to the "Who" question. Who would deliver him from the life flood?... God Almighty!