Fortunately, I think it's too late for them. Sure, they could forge some documents as Christianity did (see the TF of "Josephus"). Certainly they could "discover" pseudo-epigraphical attestations as was all the rage among theologians of the first few centuries AD. They might even take some pointers from the Pope as far as crafting "relics". However, that ship has already sailed. Christianity at least did all this legwork in ancient times. History is a lot harder to rewrite in the modern age.
Atheist Forums Hall of Shame:
"The trinity can be equated to having your cake and eating it too."
... -Lucent, trying to defend the Trinity concept
"(Yahweh's) actions are good because (Yahweh) is the ultimate standard of goodness. That’s not begging the question"
... -Statler Waldorf, Christian apologist
"The trinity can be equated to having your cake and eating it too."
... -Lucent, trying to defend the Trinity concept
"(Yahweh's) actions are good because (Yahweh) is the ultimate standard of goodness. That’s not begging the question"
... -Statler Waldorf, Christian apologist