The Jehovah's Witnesses say the Holy Spirit is not a "person," but Jesus said the following: Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. (John 3:5-6) God is a Spirit: and they that worship him must worship him in spirit and in truth. (John 4:24)
The Jehovah's Witnesses also say that the soul is not immortal. However, Jesus said, Give place: for the maid is not dead, but sleepeth. (Matthew 9:24) Then he raised her from the dead. There's also this: But as touching the resurrection of the dead, have ye not read that which was spoken unto you by God, saying, I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living. (Matthew 22:31-32) There are other verses concerning the resurrection of the soul in the flesh as well that you could use.
Perhaps at the higher ranks, they would qualify their position. Jesus nevertheless teaches "life" eternal, which is immortality of the soul and immortality of the resurrected and rendered-incorruptible flesh.
The Jehovah's Witnesses also have a long history of prophesying things that didn't happen they thought had been ordained of God. With each disappointment, they just went on as if they hadn't been misled and made a huge error. Some of that history is readily even on the Wikipedia. It's not difficult to find.