Giff the origins of the myth of Jesus are ancient sumerian myths and even some of the most prominent religions from which Christianity borrowed from are Mithraism,Krishna,even sun worship as practiced by the Romans of the period.I actually have a book entitled '16 Crucified Christ' it's a classic and it pretty much breaks down the origins of Christianity pretty well.
There is nothing people will not maintain when they are slaves to superstition
http://chatpilot-godisamyth.blogspot.com/
http://chatpilot-godisamyth.blogspot.com/