[Oyk]

There is no need to argue. In the quran Your god Allah has never spoken to mohammad  ..therefore it is no good. 

Come prove me wrong! I wanted it only from the quran...no other sources!

You might be praying in vain

That's a question that they shant be able to answer. 

In fact, their god had never spoken to anyone. All the Quran tells is just a recital of some random sayings taken from the Bible, rephrased. Hence, the Quran cannot answer a lot of questions.

So how? Well read the Bible for the answers! And throw in the Hadith. Just add the first five books of the Bible to their theology and the job's done because in the Christian Bible, God spoke to Adam Abraham Moses bla bla and bla.