Genesis 18:8-10

New Century Version

⁸ Abraham gave the three men the calf that had been cooked and milk curds and milk. While they ate, he stood under the tree near them.

⁹ The men asked Abraham, “Where is your wife Sarah?”

“There, in the tent,” said Abraham.

¹⁰ Then the Lord said, “I will certainly return to you about this time a year from now. At that time your wife Sarah will have a son.”

Sarah was listening at the entrance of the tent which was behind him.