Isaiah 44:6, "Thus says the Lord, the King of Israel And his Redeemer, the Lord of host; I am the first and I am the last, And there is no God besides Me."
But Jesus Christ makes the same claim in Revelation:
Revelation 1:8: I am the Alpha and the Omega, says the Lord God, who is and who was and who is to come, the Almighty.
Revelation 1:17-18: And when I saw Him, I fell at His feet as a dead man. And He laid His right hand upon me, saying, "Do not be afraid; I am the first and the last. I am He who lives, and was dead, and behold, I am alive forevermore. Amen. And I have the keys of Hades and of Death."
Revelation 21:5-6: And He who sits on the throne said, "Behold I am making all things new." And He said to me, "It is done I am the Alpha and Omega."
The point or the scope of my question has to do with the "eternality" of Jesus Christ. And since He is eternal according to John 1:1-3 He is also the one who will make all things new.
According to Jehovah's Witnesses, how and why does Jesus make these statements, when according to their teaching he is not one being with God the Father?