I agree. A good start would be identifying the God of the Bible. Then you could look for those that worship that one true God. (John 17:3) This means everlasting life, their coming to know you, the only true God, and the one whom you sent, Jesus Christ.
You may agree on this point, but do you agree that Jesus, as the Son of God inherited his Father's divine nature?
Do you agree that you believe that Jesus was a god and also an archangel and hence that archangels are gods making the Jehovah's Witness theology a polytheist one?
It will be interesting to see whether you answer these questions, or choose to ignore them.