Nat Geo channel ran their 2-hour show this weekend on what (we'd call today) the politicians/marketing men (women were oppressed/excluded then as now from "religious" power) left out of the Bible.
There was lots of competing stuff around when the Christians were building their brand, so they had to come up a huge marketing/spin campaign to sell their Boy to the uneducated, child-like, low-information simpletons of their time (seems most of those simpleton's descendents watch Fox, love Rush, and live in US rural areas).
Virgin Birth (misogyny/anti-sex, their Boy couldn't possibly arrive from screwing a woman)/assumption, numerous miracles, resurrection, etc would have certainly wowed the simpletons back then, as now.