New Defender's Study Bible Notes
68:4 his name JAH. This is the only place in the Bible where God is called JAH. The name is probably a contraction of the much more common name Jehovah, Or Yahweh, usually rendered as “LORD,” both meaning essentially the self-existent one. JAH never had a beginning. He rides on the “heavens”—that is the vast spaces of the cosmos which He created.