Genesis 4:1

Cain and Abel

1Now Adam knew Eve his wife, and she conceived and bore Cain, saying, “I have gotten
 Cain sounds like the Hebrew for  gotten
a man with the help of the Lord.”

Genesis 19:8

8 bBehold, I have two daughters who have not known any man. Let me bring them out to you, and do to them as you please. Only do nothing to these men, for they have come under the shelter of my roof.”
Copyright information for ESV