Cain and Abel

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

Cain knew his wife, and she conceived and bore Enoch. When he built a city, he called the name of the city after the name of his son, Enoch.

And Adam knew his wife again, and she bore a son and called his name Seth, for she said, “God has appointed for me another offspring instead of Abel, for Cain killed him.”

But Onan knew that the offspring would not be his. So whenever he went in to his brother's wife he would waste the semen on the ground, so as not to give offspring to his brother.

The angel of the Lord appeared no more to Manoah and to his wife. Then Manoah knew that he was the angel of the Lord.

They rose early in the morning and worshiped before the Lord; then they went back to their house at Ramah. And Elkanah knew Hannah his wife, and the Lord remembered her.