Jehovah Witnesses are Arianists
"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" (Rev. 1.8).
"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).
"I am Alpha and Omega, the beginning and the end, the first and the last" (Rev. 22.13).
"And when I saw him, I fell at his feet as dead. And he laid his right hand upon me, saying unto me, Fear not; I am the first and the last: I [am] he that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death" (Rev. 1.17-18).
Do you see that? "Who, being in the form of God, thought it not robbery to be equal with God" (Phil. 2.6). This is a Trinity.