Alpha (A), the first letter of the Greek alphabet, and Omega (Ω), the last letter, are often found combined into a single symbol representing Christ.
Cerasoli tombstone, Hope Cemetery, Barre, Vermont
©2008 Kimberly Powell
Revelation 22:13 in the King James version of the Bible says "I am Alpha and Omega, the beginning and the end, the first and the last." For this reason, the juxtaposed symbols often represent God's eternity, or the "beginning" and the "end." The two symbols are sometimes found used with the Chi Rho (PX) symbol. Individually, Alpha and Omega are also symbols of eternity that pre-exist Christianity.