Revelation 1:8

"I am the Alpha and the Omega," says the Lord God, who is and was and 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

Undoubtedly the mystery of our religion is a great wonder: "He was made visible in human form; He was vindicated by the Spirit; He was seen by angels; He was proclaimed among the heathen; He was trusted in throughout the world; He was taken up to glory."

Matthew 25:34

Then the King will say to those at His right, 'Come, you who are blessed by my Father, take possession of the kingdom prepared for you from the creation of the world.

Matthew 27:37

They put above His head the charge against Him, which read: "THIS IS JESUS, THE KING OF THE JEWS."

Revelation 1:11

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

Revelation 1:17-18

So when I saw Him, I fell at His feet like a dead man. But He laid His right hand upon me and said: "Do not be afraid any more. I am the First and the Last;

Revelation 2:8

"To the messenger of the church in Smyrna write: "'The First and the Last, who once was dead but came to life again, speaks as follows:

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 was and is to come, the Almighty.
Revelation 2:8
"To the messenger of the church in Smyrna write: "'The First and the Last, who once was dead but came to life again, speaks as follows:
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
Undoubtedly the mystery of our religion is a great wonder: "He was made visible in human form; He was vindicated by the Spirit; He was seen by angels; He was proclaimed among the heathen; He was trusted in throughout the world; He was taken up to glory."

General references

Hebrews 13:8
Jesus Christ is the same yesterday and today, yes, forever.
James 2:19
Do you believe in one God? Very well; the demons, too, believe that, and shudder.
Revelation 22:13
I am the Alpha and the Omega, the first and the last, the beginning and the end.