Genesis 4:1
Douay-Rheims
And Adam knew Eve his wife: who conceived and brought forth Cain, saying: I have gotten a man through God.
John Chrysostom
After his disobedience, after their loss of the garden, then it was that the practice of intercourse had its beginning. You see, before their disobedience they followed a life like that of angels, and there was not mention of intercourse.
Source details
A.D. 407 · on Gen 4:1-2 (HOMILIES ON GENESIS 18.12)
Imported from an open dataset — not yet checked against the printed edition.