Genesis 18:8-10 New International Version - UK (NIVUK)
8 He then brought some curds and milk and the calf that had been prepared, and set these before them. While they ate, he stood near them under a tree.
9 ‘Where is your wife Sarah?’ they asked him.
‘There, in the tent,’ he said.
10 Then one of them said, ‘I will surely return to you about this time next year, and Sarah your wife will have a son.’
Now Sarah was listening at the entrance to the tent, which was behind him.