 For the leader of the music; upon the Shushan-Eduth; a psalm of David for instruction; when he was at strife with the Syrians of Mesopotamia, and the Syrians of Zoba; when Joab returned, and smote twelve thousand Edomites in the valley of Salt. O God! thou hast forsaken us; thou hast broken us in pieces; Thou hast been angry! O revive us again! 