Revelation 1:8

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

Revelation 22:13

I am the Alpha and the Omega, The First and the Last, The Beginning and the End.

1 Timothy 3:16

Yes! without contradiction, great is the mystery of godliness!

Matthew 25:34

"Then he, the King will say to those on his right hand. "'Come, my Father's blessed ones, inherit the kingdom prepared for you from the foundation of the world.

Matthew 27:37

They also placed above his head his accusation written, This is Jesus The King of the Jews

Revelation 1:11

saying, "Write in a book what you see, and send it to the seven churches; to Ephesus and to Smyrna and to Pergamos and to Thyatira and Sardis and Philadelphia and Laodicea."

Revelation 1:17-18

When I saw him, I fell at his feet as one dead. And he laid his right hand upon me, saying. "Fear not; I am the first and the last, and the Living One.

Revelation 2:8

And unto the angel of the Church in Smyrna, write. These are the words of the First and the Last, he who died and has returned to life.

Treasury of Scripture Knowledge

Summary

Thus saith the LORD the King of Israel, and his redeemer the LORD of hosts; I am the first, and I am the last; and beside me there is no God.

Bible References

I am the first

Revelation 1:8
"I am the Alpha and the Omega," says the Lord God, who is, and who was, and who is to come, the Almighty.
Revelation 2:8
And unto the angel of the Church in Smyrna, write. These are the words of the First and the Last, he who died and has returned to life.
Revelation 22:13
I am the Alpha and the Omega, The First and the Last, The Beginning and the End.

Beside

1 Timothy 3:16
Yes! without contradiction, great is the mystery of godliness!

General references

Hebrews 13:8
Jesus Christ is the same yesterday, today, and forever.
James 2:19
You believe that God is one? You do well; even the demons believe, and they shudder.
Revelation 22:13
I am the Alpha and the Omega, The First and the Last, The Beginning and the End.