Revelation 1:8

I am Alpha and Omega, the beginning and the end, saith the Lord, who is, and who was, and who is coming??he Almighty.

Revelation 22:13

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

1 Timothy 3:16

And confessedly great is the mystery of godliness: God was manifested in the flesh, justified by the Spirit, seen of angels, preached among the Gentiles, believed on in the world, received up into glory.

Matthew 25:34

Then shall the King say to those on his right-hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world;

Matthew 27:37

And they placed over his head his accusation in writing, THIS IS JESUS THE KING OF THE JEWS.

Revelation 1:11

saying, I am the Alpha and the Omega, the first and the last; and what thou seest write in a book, and send to the churches which are in Asia: to Ephesus, and to Smyrna, and to Pergamos, and to Thyatira, and to Sardis, and to Philadelphia, and to Laodicea.

Revelation 1:17-18

And when I beheld him, I fell at his feet as dead: and he laid his right hand upon me, saying to me, Fear not; I am the first and the last,

Revelation 2:8

And to the angel of the church of the Smyrnians write, These things saith the first and the last, who was dead, and is alive:

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 Alpha and Omega, the beginning and the end, saith the Lord, who is, and who was, and who is coming??he Almighty.
Revelation 2:8
And to the angel of the church of the Smyrnians write, These things saith the first and the last, who was dead, and is alive:
Revelation 22:13
I am the Alpha and the Omega, the beginning and the end, the first and the last.

Beside

1 Timothy 3:16
And confessedly great is the mystery of godliness: God was manifested in the flesh, justified by the Spirit, seen of angels, preached among the Gentiles, believed on in the world, received up into glory.

General references

Hebrews 13:8
Jesus Christ [is] the same yesterday, to-day, and for ever.
James 2:19
Thou believest that there is one God; thou doest well: the devils also believe and tremble.
Revelation 22:13
I am the Alpha and the Omega, the beginning and the end, the first and the last.