Well, GOD himself said he is the only God. He also said the same thing in Deut 32:39, Isa 43:3, Isa 43:10-11, Isa 44:6, Isa 45:5,21. How can Jesus Christ be ‘a god’, if GOD said he is the only God? And how many times does GOD have to repeat Himself before we humans get the message?
The Watchtower Society (WTS) teaching that Jesus Christ is ‘a god’, is an open admission that Jehovah is not the only god. That alone is a violation of the first commandment,
“I am the Lord, your GOD. YOU SHALL NOT HAVE OTHER GODS BESIDES ME.”
Exodus 20:1-3
By adding that little letter ‘a’ to John 1:1, the WTS has changed the meaning of the entire Bible. That little letter is a predicate nominative, and it is not in the Greek text. It was deliberately inserted by the WTS to downgrade Jesus Christ to fit their false teaching. If we look at the context of John 1:1-18, we will find that the letter ‘a’ was not added in John 1:6, nor was it added in John 1:18. Why is this WTS? I suppose by adding the letter in John 1:18, “No man has seen ‘a’ God at any time;” just would not sound right now would it? Also we run into the problem of a capital ‘G’ for God in that verse. Inconsistencies abound in the NWT.