Then will I go unto the altar Of God. As the special place where thanksgiving ought to be made, and sacrifice offered (see 2 Samuel 6:17; 1 Chronicles 16:1). Unto God my exceeding Joy; literally, unto God the gladness of my exultation.
Yea, upon the harp will I praise thee, O God my God. The psalmist has before him some such scene as that depicted in 2 Samuel 6:1-23. and 1 Chronicles 15:25-29, where, amid shouts and singing and dancing, and "with sound of the cornet, and with trumpets, and with cymbals, with psalteries and harps," a joyful procession approached the tabernacle, David himself taking part in it.