Adam, the first gentleman

Adam, the first gentleman
Made love to the first lady Eve.
And came Cain.

Adam made love to Eve again.
Then came Abe.
Later Cain killed Abe.

Cain married a woman he knew.
Wait. Where from she came?
For in the beginning was Adam

And from his rib Eve came.
Whose rib was it, whose foot was it,
From which the wife of Cain came?