A - Easton's Bible Dictionary
Alpha, the first letter of the Greek alphabet, as Omega is the last. These letters occur in the text of Rev. 1:8, 11; 21:6; 22:13, and are represented by "Alpha" and "Omega" respectively (omitted in R.V., 1:11). They mean "the first and last." (Comp. Heb. 12:2; Isa. 41:4; 44:6; Rev. 1:11, 17; 2:8.) 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.
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Easton's Bible Dictionary
The Illustrated Bible Dictionary, better known as Easton's Bible Dictionary, is a reference work on topics related to the Christian Bible, compiled by Matthew George Easton. The first edition was published in 1893, and a revised edition was published the following year.