Greg Kane has, thankfully, revamped one of the best sites on the web--Pagan Origins of the Christ Myth. Gone are the misnomers (rampant as they are) regarding Mithraism so forth and so on. Clearer and more defined are the links between Christianity and Paganism. Jesus is not a carbon copy deity of Mithraism for example, but an old car with new parts. As GREG writes:
For a number of reasons, the Jesus as a knock-off Mithras, etc. theory doesn't work so well. At POCM we are NOT talking about Christianity's Pagan origins as a knock-off copy of some Pagan religion.
What you will discover at POCM:
What you'll discover at POCM >Pagan Ideas is that many (but not all) ancient religions were religions of salvation. In general, ancient Mediterranean people believed they would live on after death, with good people having happier afterlives than bad people. Many religions were set up to give believers a better deal after death. What that better deal was depended on the religion: in some Greek mysteries it was the Elysian Fields; for followers of Isis and Osiris it was eternity with Osiris in Underground Heaven; for many philosophy/ religions it was return of the disembodied soul to the One God in the sky. Some ancient religions even called this "salvation." And it all predated Christianity by generations—by hundreds and hundreds of years.
I've been waiting for this overhaul for some time now--though Greg states he has "been reading, not updating." Ha-ha. It has arrived, and though I certainly don't agree with everything he says, POCM is far better for it.
POCM
http://www.medmalexperts.com/POCM/getting_started_pocm.html
Kindly,
Sean