if god knows everything, he knows when every house fire is going on, god is all powerful so he could put the fire out or call 9-1-1 for them. god pefectly righteous and the right hting to do is no let the people get hurt. god doesn't do these things , therefore he doesn't exist
You don't even need to go that far dude, just ask them to prove the existence of God, and when they inevitably fail to do that just give them the and ask them why they believe in things that cannot prove like a eight year old that believes in Santa Claus. Don't even give them enough room to engage in hypothetical discussions as if the idea of the Abrahamic God isn't completely absurd in the first fukking place.