I know that has probably been covered ad infinitum on JWD.
So.....
If Jehovah is omnipotent, then there is nothing he can't do and nothing he doesn't know.
And, according to JWs (as well as most other religions), God is love.
Therefore he had to have known, even before creating all of creation, what would happen. He would have had to know even before creating Lucifer that Lucifer would cause Adam and Eve to sin. Even before that, he would have had to have known about the whole history yet to come, all the way up to the end, and beyond.
So why bother? Why bother creating things that will turn against him?
And, if god is love, why make humans suffer the fallout of an argument between him and Lucifer? Those boys should have just taken it outside. After all, if god and the angels are perfect and so far above us, it seems very unfair to use weak and lowly creatures as pawns.
The average JW will begin to talk about "free will" and the "loving" provision of Christ's death.
At that point, you point out that if humans have free will, then any choice they make would be made at that moment in time, meaning Jehovah wouldn't have prior knowledge and a subsequent plan of attack afterwards. Therefore if humans have free will, then God isn't omnipotent. And if god isn't omnipotent, then there are other things that are beyond his control.
Oh no, says the JW, god is omnipotent. Well sorry, it just seems to me that you can't have free will and an omnipotent god at the same time.
As for Christ's death, why would god need to set up a get out of jail pass if he knows that he will ultimately be victorious and knew that from the beginning? Seems kind of redundant to me.
Also, it is obvious that the universe had a definite beginning. Even according to the bible, it had a beginning "In the beginning, God created the heavens and the earth." Along with this, everything god created had/has a purpose. Still further, god is the definition of good, meaning no evil can exist in god. Remember too, "god is love."
If god created everything (including Lucifer) and if everything has a purpose, then god purposely created evil. How can a being in which evil cannot exist, create evil?
So if god created evil, then god cannot be good nor can god be love.
And some people wonder why I'm an atheist.
There are lots of other arguments that call into question the motives of god.
To be fair, it isn't just the JWs who can't make logical, non-circular rebuttals to these arguments, but the Dubs really get bent out of shape.
You'd think they'd concentrate on coming up with logical arguments to counter so that all the atheists and agnostics will convert.
Hmmmm.