Is Christianity based on older myths?

[vorlon13]

You know, I put myself in the shoes of a christian and wondered how I would argue that the bible is true, God exists and God is Yahweh.

I couldn't even get started. It must be incredibly frustrating.

Or if you're a Mormon, and God is Adam too, and also the Archangel Michael, and also Jesus father in the form of Adam (conception occurring via actual penis/vagina sex, no doves or spooks, no siree, the real dirty deed).

So Mary, mother of Jesus is another one of Adam's wives.