Psalms 68:4 - Joseph Benson’s Commentary on the Old and New Testaments

Sing unto God, &c. “The prophet here exhorts the people of God to magnify with Psalms, and hymns, and spiritual songs, the eternal and incommunicable name of Him who was, and is, and is to come; who, deriving being from none, gives it to all, and who, as Redeemer of his people, is exalted above the heavens, and all the powers therein, above the gods of the nations; is acknowledged and glorified by saints and angels; feared and trembled at by ungodly men and evil spirits.” Horne. Extol him, &c. Hebrew, cast up, or prepare the way, for him that rideth through the deserts, or, that did ride in the desert, namely, manifested his presence between the cherubim upon the mercy-seat of the ark, when it was carried through the wilderness; or marched along with it in the cloudy pillar. Or, that now rideth, as in the desert, that is, whose ark, with which he is present, is now carried from place to place, as it was in the desert. This construction is most agreeable to the common usage of the original words here employed, סלו, sollu, rendered extol, properly meaning, to cast up, or prepare a way; and ערבות, gnaraboth, translated heavens, generally signifying the deserts, or plain fields. By his name Jah Whereby he is known and distinguished from all false gods, Jah being, no doubt, an abbreviation of the name Jehovah, which the heathen pronounced Jao. And rejoice before him Before the ark, with which he is present. Thus David is said to have danced before the Lord on this occasion.