Easton's Bible Dictionary (1897)
Alpha, the first letter of the Greek alphabet, as Omega is the last. , 1:11). ” (Comp. ) In the symbols of the early Christian Church these two letters are frequently combined with the cross or with Christ’s monogram to denote his divinity.
Smith's Bible Dictionary (1863)
See Alpha
Hastings' Dictionary of the Bible (1898)
] ;Rev 21:6; Rev 22:13, just as the phrase "The first and .... the last" is used by Jehovah, Isa 41:4;Isa 44:6, to express the idea of eternity, and also of divine causality.