While I enjoy these born-again Christians getting owned by well educated, erudite people, I also recognise that logic and rational has never played a part in the formation of a religion, and its not going to start now. If people acted logically in the first place, we wouldn't have any religions ! If anyone wants an example of how credulous religions can be, they only have to look at Scientology.
Arguing with them is fun but ultimately pointless, because the more they are challenged and questioned, the more they retreat into mists of fantasy.
Debating with people like this caller is like trying to nail custard to the wall.