Catholic Church Scandal!

LOL nobody thinks Paul had a birth certificate or DNA analysis.

Thanks for the ginomai/gennao distinction. Do you think that's referring to David's "line" or his actual sperm? and is it a point in favor of Paul thinking Mary was a virgin?
Obviously there was no birth certificate or DNA analysis (smart arse! ;)), but there's also no evidence of any oral or written history either behind that, just repurposed scripture, which is what I was pointing out.

Regarding the virgin birth, I don't think that had been thought up yet during Paul's time. He makes no mention of it nor Mary, nor do any other writers, until that story debuted in Matthew, written a least a generation after Paul died, with Matthew repurposing Isaiah 7:14. (There's even a clever little twist in Matthew, as Isaiah reads "the young girl/virgin will conceive and give birth to a son, and will call him Immanuel." Jesus is never in fact referred to as Immanuel, which translates to "God is with you," but there is a play on this in the last line of Matthew, where he concludes his Gospel with Jesus saying "I am with you.")

Regarding what Paul meant, sperm or line, he literally and specifically says God made Jesus' flesh from David's sperm/seed, not that he was merely born of his line (as many if not most or even all first century Jews would have believed themselves to be descendants of David), so I lean to that intent. But the former wouldn't preclude the latter, and either way it's a theological construct of a zealot, so he's just repeating and rationalizing what he "learned" from 2 Samuel.