Rev 1:4,8, 4:8, Jn 8:58, Heb 13:8, Rev 22:13
God is the I AM. (Ex 3:13-14)
Ex 3:13 And Moses said unto God, Behold, when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them? 14 And God said unto Moses, I Am That I Am: and he said, Thus shalt thou say unto the children of Israel, I Am hath sent me unto you.
Jesus Christ is the I AM. And he is the beginning and the end. (Rev 1:4,8, John 8:58, Heb 13:8, Rev 22:13)
Rev 1:4 John to the seven churches which are in Asia: Grace be unto you, and peace, from him which is, and which was, and which is to come; and from the seven Spirits which are before his throne; 8 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.
John 8:58 Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
Heb 13:8 Jesus Christ the same yesterday, and to day, and for ever.
Rev 22:13 I am Alpha and Omega, the beginning and the end, the first and the last.