Alpha (Α or α) and omega (Ω or ω) are the first and last letters of the Greek alphabet. Alpha a title of Christ and God in the Book of Revelation 22:12-13 NIV: “Look, I am coming soon! My reward is with me, and I will give to each person according to what they have done. I am the Alpha and the Omega, the First and the Last, the Beginning and the End. This pair of letters is used as a Christian symbol, and is often combined with the Cross, Chi-rho, or other Christian symbols.