1 Cor. 15: 21,22 RNWT: For since death came through a man,+ resurrection of the dead also comes through a man.+ 22 For just as in Adam all are dying,+ so also in the Christ all will be made alive.
So according to the NT Jesus makes alive those that die in Adam.
Given the overwhelming evidence that Adam as a man did not exist JWs lose the battle on this verse.
However foolish Christians like Pentecostals and Catholics like to call Adam figurative.
Okay... read it again^^^^^^...
Now add verse 45: The first man Adam became a living person.”*+ The last Adam became a life-giving spirit.
Fail....
And even if you could claim Adam is symbolic that would make Genesis 5, 10,11 of genealogies useless.... Thus Matthew 1 and Luke 3 become useless.
There is no way out of this.
I do not even need to debunk Jesus to destroy Christianity even liberal Christianity.
JW doctrine as I was taught fell through for me when I discovered evolution was true and archaeology debunked most of the OT. But the worst thing I see is a person that knows JW religion is wrong and jumps in bed with another religion that is christian. Just read the NT and see that even Jesus is said to quote Genesis 1: 27 and 2:24 in the same sentence.
I hope this helps