the most important part; the basic substance
—Good customer service is the alpha and omega of our restaurant’s plan for success.
The prophetic Book of Revelation was written by the Apostle John. In the first chapter, John records God’s description of himself:
“I am the Alpha and the Omega [I am Alpha and Omega],” says the Lord God—the one who is, and who was, and who is still to come—the All-Powerful! (Revelation 1:8)
Alpha is the first letter of the Greek alphabet, and omega is the last. Therefore, alpha and omega is like A and Z.