Genesis 18:9-19

The men asked Abraham, “Where is your wife Sarah?” “There, in the tent,” said Abraham. 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. Abraham and Sarah were very old. Since Sarah was past the age when women normally have children, she laughed to herself, “My husband and I are too old to have a baby.” Then the LORD said to Abraham, “Why did Sarah laugh? Why did she say, ‘I am too old to have a baby’? Is anything too hard for the LORD? No! I will return to you at the right time a year from now, and Sarah will have a son.” Sarah was afraid, so she lied and said, “I didn’t laugh.” But the LORD said, “No. You did laugh.” Then the men got up to leave and started out toward Sodom. Abraham walked along with them a short time to send them on their way. The LORD said, “Should I tell Abraham what I am going to do now? Abraham’s children will certainly become a great and powerful nation, and all nations on earth will be blessed through him. I have chosen him so he would command his children and his descendants to live the way the LORD wants them to, to live right and be fair. Then I, the LORD, will give Abraham what I promised him.”