The Apostle John said this:
"The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John: Who bare record of the word of God, and of the testimony of Jesus Christ, and of all things that he saw" (Rev.1:1-2).
John says that he bare the record of the "testimony of Jesus Christ." Since John recorded the "testimony of Jesus Christ" then it is the Lord Jesus Himself who testified these things:
"He which testifieth these things saith, Surely I come quickly. Amen. Even so, come, Lord Jesus" (Rev.22:20).
Therefore, we can know that in the following verse it is the Lord Jesus speaking:
"And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. I am Alpha and Omega, the beginning and the end, the first and the last" (Rev.22:12-13).
Here we see God describing Himself in the same way, as being the
"Alpha and Omega, the beginning and the end":
"And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are true and faithful. And he said unto me, It is done. I am Alpha and Omega, the beginning and the end. I will give unto him that is athirst of the fountain of the water of life freely. He that overcometh shall inherit all things; and I will be his God, and he shall be my son" (Rev.21:5-7).
God is the only One who can be described as the
"Alpha and Omega, the beginning and the end", and that is exactly how the Lord Jesus describes Himself. Therefore, common sense dictates that the Lord Jesus is God.
I have already shown you these truths and you were unable to prove that anything which I said is in error.