I am looking for more arguments to prove Muhammad (pbuh) is a true prophet to a Christian.
I know this Christian Pastor who I am friends with. He has been trying to convert me to Christianity but I have been able to turn the tables on him. I've brought up issues with Paul, issues with the trinity, holes in bible stories that resolved in Islam, and other things. He is actually questioning Christianity. The biggest stumbling block for him is accepting Muhammad (pbuh) as a true prophet.
I have already mentioned the "comforter" argument, and the argument that Muhammad fulfilled the prophecy that Abraham sons would control everything between the two rivers. He does not reject these arguments, but does not accept them either. I need a bit more to push him over the edge. What other arguments are there that a Christian might accept? Please post as many as possible.