Genesis 18:2-15

2He lifted up his eyes and looked, and behold, three men were standing in front of him. When he saw them, he ran from the tent door to meet them and bowed himself to the earth

3and said, "O Lord, if I have found favor in your sight, do not pass by your servant.

4Let a little water be brought, and wash your feet, and rest yourselves under the tree,

5while I bring a morsel of bread, that you may refresh yourselves, and after that you may pass on—since you have come to your servant." So they said, "Do as you have said."

6And Abraham went quickly into the tent to Sarah and said, "Quick! Three seahs of fine flour! Knead it, and make cakes."

7And Abraham ran to the herd and took a calf, tender and good, and gave it to a young man, who prepared it quickly.

8Then he took curds and milk and the calf that he had prepared, and set it before them. And he stood by them under the tree while they ate.

9They said to him, "Where is Sarah your wife?" And he said, "She is in the tent."

10The Lord said, "I will surely return to you about this time next year, and Sarah your wife shall have a son." And Sarah was listening at the tent door behind him.

11Now Abraham and Sarah were old, advanced in years. The way of women had ceased to be with Sarah.

12So Sarah laughed to herself, saying, "After I am worn out, and my lord is old, shall I have pleasure?"

13The Lord said to Abraham, "Why did Sarah laugh and say, 'Shall I indeed bear a child, now that I am old?'

14Is anything too hard for the Lord? At the appointed time I will return to you, about this time next year, and Sarah shall have a son."

15But Sarah denied it, saying, "I did not laugh," for she was afraid. He said, "No, but you did laugh."