Albert Barnes' Notes on the Whole Bible - Psalms 9:13
Have mercy upon me, O Lord - The cry for mercy implies that though God had interposed and granted them surprising deliverances, yet he was still surrounded by enemies, and was still in trouble. See introduction to the psalm, 2, 3. He had been delivered from many troubles, but there were many still pressing upon him, and he now calls on God to interpose further in his behalf, and to grant him entire deliverance from all his sorrows and dangers. The trouble to which he here refers was of the same... read more
Albert Barnes' Notes on the Whole Bible - Psalms 9:12
When he maketh inquisition for blood - When he “inquires” after blood; that is, when he comes forth with this view, to wit, for purposes of punishment. There is allusion here to such passages as that in Genesis 9:5, “And surely your blood of your lives will I require; at the hand of every beast will I require it, and at the hand of man.” The idea is, that when blood was shed in murder, God would seek out the murderer; he would require satisfaction of him who had shed the blood; he would punish... read more