By this I mean that they deny that Jesus Christ was Jehovah God, manifested in the flesh.
They claim that He was a created being. They refer to Him in John 1:1 of their ridiculously dishonest and unscholarly translation of the Bible, The New World Translation., as ‘a god’. (Note the small g).
What does the Bible say about this? It says that Jesus, the incarnate word, was God (John 1:1-3, John 1:14). In Rev. 1:7,8 and Rev. 22:13, Jesus is shown to possess the attribute of eternal self-existence that Isaiah 41:4, Isaiah 44:6, and Isaiah 48:12 clearly teach is an attribute belonging exclusively to Jehovah God. In Philippians 2:9-11, the worship that Paul said belonged to Jesus Christ was exactly the same worship that Isaiah 45:22-25 said belonged exclusively to Jehovah.
Many acts that Jehovah of the Old Testament declared He would do, Christ did and declared His acts to be the fulfillment of those prophecies. Compare Isaiah 44:22,23 which declares Jehovah to be the redeemer, to Eph. 1:7 which declares Jesus Christ to be the redeemer. Compare Isaiah 54:17 which declares Jehovah to be our righteousness, to I Cor. 1:30 which says Jesus Christ is our righteousness. Compare Isaiah 43:11 which teaches that only Jehovah is the Savior of man, to Titus 2:13 which says so plainly that Jesus Christ is that Savior.
Col. 2:9,10 declares that “in Him dwelled all the fullness of the Godhead bodily “, and that we are complete in Him, which is the head of all principality and power. “Jehovah’s Witnesses” deny this. Friend, this denial makes them not just ‘misled Christians’, but salesmen for the serpent, ambassadors for Satan, enemies of Christ, and the finished work of His cross.