Revelation 1:8; Revelation 21:6; Revelation 22:13

Revelation 1:8

8 "I am the Alpha and the Omega," says the Lord God, "who is and who was and who is to come, the Almighty."

Revelation 21:6

6 Then He said to me, "It is done. I am the Alpha and the Omega, the beginning and the end. I will give to the one who thirsts from the spring of the water of life without cost.

Revelation 22:13

13 "I am the Alpha and the Omega, the first and the last, the beginning and the end."