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Easton's Bible Dictionary
Alpha, the first letter of the Greek alphabet, as Omega is the last. These letters occur in the text of Revelation 1:8,11
, and are represented by "Alpha" and "Omega" respectively (omitted in RSV, 1:11). They mean "the first and last." (Compare Hebrews 12:2
; Isaiah 41:4
; Revelation 1:11,17
.) 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.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain.
Easton, Matthew George. Entry for 'A'. Easton's Bible Dictionary. https://www.studylight.org/dictionaries/eng/ebd/a/a.html. 1897.