Lilith isn't in the bible. She's sort of implied in the first "Male and female he created them" or something like that, and she's big in Jewish folklore, in which she left the Garden of Eden of her own volition and became a child-stealing infant-killing demon, more or less.

But there's still the icky incest that no one I asked wanted to account for.

Well, Cain would have had to marry one of his sisters, there are lots of unmentioned daughters of Adam and Eve. 23 or something.

Born of whom, is the question ...

Adam and Eve, or of their children. Maybe their grandchildren.

There's no getting around the incest thing.

I had who Cain married explained to me, but I don't remember. I think it had something to do with, um, giants. But I might be mixing my mythologies.

But there's still the icky incest that no one I asked wanted to account for.

There was incest, but Adam and Eve were perfect humans so there wasn't any worry about birth defects and such from inbreeding.

Well, Cain would have had to marry one of his sisters, there are lots of unmentioned daughters of Adam and Eve. 23 or something.

Were there other brothers? If not, Cain and Able would have been pretty busy....

I'm pretty sure there were other brothers. I think there is some line about how Adam had many sons and daughters by the time he lived his 800 years or so.

These were my questions that never got answered. They seemed to make my Sunday School teachers uncomfortable.

That made Sunday School worth going to. Like my riff on Jesus entering into Jerusalem at Passover and cursing a tree that didn't bear fruit at his command. I was all, "But--it's barely spring! Trees aren't supposed to bear fruit yet!" See what happens when you tell these stories to farm kids?

Later I was told it was some parable about how people should be productive for Christ, but at the time it just made think Jesus was a big meanie.

Don't forget, the whole incest issue comes back again after the Flood, when Noah and his family are the only humans left.