Alpha (A/a) and Omega (W/w) are the first and last letters of the Greek alphabet. When they are used together, they have a similar meaning to our expression, “from A to Z.” They symbolize that Jesus is the first and the last, the beginning and end of all things (Rev 22:13, 1:8, 21:6). Since they are designed to show the eternalness of Christ, they would always be used in connection with a monogram or some other symbol that signifies Christ; otherwise their meaning would be simply two letters of the Greek alphabet. The cross in the center is one such symbol which refers to the fact that Jesus Christ is the same yesterday, today, and forever (Heb. 13:8).