Overview
Alpha (Α or α) and omega (Ω or ω) are the first and last letters of the Greek alphabet, and a title of Christ and God in the Book of Revelation. This pair of letters is used as a Christian symbol, and is often combined with the Cross, Chi-rho, or other Christian symbols.
Origin
The first written record of the phrase "alpha and omega" is from some old manuscripts of the Christian New Testament.
The phrase "I am the Alpha and the Omega" (Koiné Greek: "ἐγώ εἰμί τὸ Ἄλφα καὶ τὸ Ὦ"), is an appellation of Jesus and of the Father in the Book of Revelation (verses 1:8, 21:6, and 22:13). The first part of this phrase ("I am the Alpha and the Omega") is first found in Chapter 1 verse 8 ("1:8"), and is found in every manuscript of Revelation that has 1:8. Several later manuscripts repeat "I am the Alpha and the Omega" in 1:11 too, but do not receive support here from most of the oldest manuscripts, including the Alexandrine, Sinaitic, and Codex Ephraemi Rescriptus. It is, therefore, omitted in some modern translations. Scholar Robert Young stated, with regard to "I am the Alpha and the Omega" in 1:11, the "oldest [manuscripts] omit" it.
A similar reference is in Isaiah 44, where the Father says to be the first and the one who is after all.
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