Malachi 3:6 Jehovah repeatedly says he does not change. He certainly didn't change into his Son Jesus. Jehovah is the Most High God, (Psalm 83:18) the Creator of this Universe and all life in it. Jesus has been elevated to King of God's Kingdom (government) to restore this Earth.
Pictured front, left to right: Anton Omelchenko, Maksim Novakov, Victor Zhenkov, and Yury Toporov, attorneys for the Administrative Center of Jehovah’s Witnesses in Russia. Rear, left to right: Vasiliy Kalin and Sergey Cherepanov (in background), members of the presiding committee of the Administrative Center of Jehovah’s Witnesses in Russia. Courtesy of Jehovah's Witnesses