Strong's #5598: omega (pronounced o'-meg-ah)

the last letter of the Greek alphabet, i.e. (figuratively) the finality:--Omega.

Thayer's Greek Lexicon:

Ō

1) the last letter in the Greek alphabet

2) the last

Part of Speech: noun

Relation: a primitive word

Usage:

This word is used 4 times:

 

Revelation 1:8: "am Alpha and Omega, the beginning and"
Revelation 1:11: "am Alpha and Omega, the first"
Revelation 21:6: "am Alpha and Omega, the beginning"
Revelation 22:13: "am Alpha and Omega, the beginning and the end, the"