21. he appointed singers . . . that they should praise . . . as they went out before the army—Having arranged the line of procession, he gave the signal to move forwards. The Levites led the van with their musical instruments; and singing the 136th Psalm, the people went on, not as an army marching against an enemy, but returning in joyful triumph after a victory.

     2Ch 20:22-30. THE OVERTHROW OF HIS ENEMIES.