'Alpha and the Omega' in the Bible

“I am the Alpha and the Omega [the Beginning and the End],” says the Lord God, “Who is [existing forever] and Who was [continually existing in the past] and Who is to come, the Almighty [the Omnipotent, the Ruler of all].”

saying, “Write on a scroll what you see [in this revelation], and send it to the seven churches—to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea.”

And He said to me, “It is done. I am the Alpha and the Omega, the Beginning and the End. To the one who thirsts I will give [water] from the fountain of the water of life without cost.

I am the Alpha and the Omega, the First and the Last, the Beginning and the End [the Eternal One].”