days of future passed, JWs do not believe in the Christian teaching of GRACE at all. The idea of Universal Salvation is one that they would not be able to wrap their minds around.
By the way, I'm an atheist. I think maybe I always was, even when I was 7 years old and my mom was "jehovizing" me.
When I was a young man, but still in, there were doctrinal points that I knew I couldn't defend rationally, but from time to time I would do something like throw out a piece of artwork (sculpture) given to me by a non-JW because of a superstitious feeling that *MAYBE* it could be demonized, and *maybe* that was the reason I had an argument with my wife.
Really stupid stuff, but the JWs essentially teach that we live in an irrational world in which ANYTHING - disembodied voices, floating demon eyeballs, exploding chickens, angelic bodyguards, OUIJA boards that jump into the air and fly apart or will not burn - is possible.