Both of this song's central claims — "who was, who is, and is to come" and "You are Yahweh, Alpha and Omega" — come from the same single verse, Revelation 1:8, where God says: "I am the Alpha and the Omega... who is and who was and who is to come, the Almighty." Using the name "Yahweh" directly, rather than "LORD," the usual English substitution, draws attention to God's self-given covenant name from Exodus 3:14, "I AM WHO I AM." The song doesn't build toward that claim through a story the way some worship songs do — it opens already there, naming God's eternity and trustworthiness as the starting point rather than a conclusion.