first this] This was the first Psalm that David appointed to be publikely sung in the service of God: afterward he appointed others. In this respect he is stiled, The sweet siger of Israel, 2 Samuel 23:1. Hereby it appears, that these Psalms were penned by David, though his name be not expressed in the titles. So many others. Consider Acts 4:25.
of Asaph] See the title of Psalms 50.