Charles H. Spurgeon on Psalms 130:2

Lord, hear my voice, etc. The expressions are metaphorical, and borrowed from the carriage of a parent to a child, and upon the matter his suit is this, —Lord, notice me when I pray, as a parent will notice his distressed child's cry when he is like to ruin. Let thine ears be attentive to the voice of my supplications; that goes a little further; that as a parent knowing a child to be in hazard, he will listen and hearken attentively if he can hear him cry, and notice and ponder that cry, and what he cries for; so he pleaded with God, that he would be waiting on and attentive, to see and hear if a cry should come from him, and that he would affectionately ponder and notice it when he hears it. —George Hutcheson, 1678.