[RobbyS]

But there ARE four Gospels, which differ considerably. What if the Church has used only one, say Luke, as the heretic Marion did? The Muslims settled on one book which they call the Qu’ran. What has always struck me is that the same skeptics who so critically analyzed the Bible have accepted the Muslim claim of the validity of the Qu’ran with hardly a murmur. I thiubk it has to do with the fact that the Qu'ran denies the Incarnation, which is the principal objection that the Enlightenment had to the New Testament and few of the supernatural touches that characterize the whole Biblical record. The Qu'ran reads more like Jeremiah or Isaiah. The Qu'ran specifically denies the divinity of Jesus and treats him as just a Prophet who preceded Mohammed.

[SatinDoll]

If you question the sanctity of the Gospels, what’s going to happen to you, hmm? You piss off a few deeply devout Christians. So what!

If you question the sanctity of the Qu’ran, what’s going to happen to you is this: an Al Qa’ida hit team shows up at your house and cuts off everyone’s head.

Choose your path.

[Lucius Cornelius Sulla]

What if the Church has used only one, say Luke, as the heretic Marion did?

My guess is that you mean Marcion, who also rejected the entire Old Testament and any validity to the Jewish religion or Christian texts which implied that Jesus honored the jewish prophets.