Strong's Concordance G1

Original Word: Α
Transliteration: A
Phonetic Spelling: al'-fah
[Α] of Hebrew origin; the first letter of the alphabet; figuratively, only (from its use as a numeral) the first: Often used (usually ἄν, before a vowel) also in composition (as a contraction from G427) in the sense of privation; so, in many words, beginning with this letter; occasionally in the sense of union (as a contraction of G260).

Usages throughout the bible

Revelation 1:8 - I am Alpha G1 and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty.

Revelation 1:11 - Saying, I am Alpha G1 and Omega, the first and the last: and, What thou seest, write in a book, and send it unto the seven churches which are in Asia; unto Ephesus, and unto Smyrna, and unto Pergamos, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.

Revelation 21:6 - And he said unto me, It is done. I am Alpha G1 and Omega, the beginning and the end. I will give unto him that is athirst of the fountain of the water of life freely.

Revelation 22:13 - I am Alpha G1 and Omega, the beginning and the end, the first and the last.