Kitto's Popular Cyclopedia of Biblial Literature
Ome´ga, the last letter of the Greek alphabet, proverbially applied to express the end, as Alpha, the first letter, the beginning of anything [ALPHA].
Kitto, John, ed. Entry for 'Omega'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/o/omega.html.