Revelation 1:8

Ἐγώ εἰμι τὸ Ἄλφα καὶ τὸ Ὦ, ἀρχὴ καὶ τέλος, λέγει ὁ Κύριος, ὁ ὢν καὶ ὁ ἦν καὶ ὁ ἐρχόμενος, ὁ παντοκράτωρ.

Egō eimi to Alpha kai to Ō, archē kai telos, legei o Kyrios, o ōn kai o ēn kai o erchomenos, o pantokratōr.

King James Version (KJV)

I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty.

Modern English

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