Let Us Reason - A Christian/muslim Dialogue

1. Does Q 42: 51 support that Allah communicated with Muhammad by an angel? Does that verse name the angel as Gabriel?  2. A challenge on Det.6:4,The Lord is one. "Please prove to us that in the Quran the word"Ahad" means "one"?  3.  Massive Dilemma: Did Muhammad know and preach his god in Q 21: 108? Al says that loving muslims is challenging their theology.See omnystudio.com/listener for privacy information.