Genesis 18:1-15, (21:1-7)
18:1 The LORD appeared to Abraham by the oaks of Mamre, as he sat at the entrance of his tent in the heat of the day.
18:2 He looked up and saw three men standing near him. When he saw them, he ran from the tent entrance to meet them, and bowed down to the ground.
18:3 He said, "My lord, if I find favor with you, do not pass by your servant.
18:4 Let a little water be brought, and wash your feet, and rest yourselves under the tree.
18:5 Let me bring a little 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."
18:6 And Abraham hastened into the tent to Sarah, and said, "Make ready quickly three measures of choice flour, knead it, and make cakes."
18:7 Abraham ran to the herd, and took a calf, tender and good, and gave it to the servant, who hastened to prepare it.
18:8 Then 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.
18:9 They said to him, "Where is your wife Sarah?" And he said, "There, in the tent."
18:10 Then one said, "I will surely return to you in due season, and your wife Sarah shall have a son." And Sarah was listening at the tent entrance behind him.
18:11 Now Abraham and Sarah were old, advanced in age; it had ceased to be with Sarah after the manner of women.
18:12 So Sarah laughed to herself, saying, "After I have grown old, and my husband is old, shall I have pleasure?"
18:13 The LORD said to Abraham, "Why did Sarah laugh, and say, 'Shall I indeed bear a child, now that I am old?'
18:14 Is anything too wonderful for the LORD? At the set time I will return to you, in due season, and Sarah shall have a son."
18:15 But Sarah denied, saying, "I did not laugh"; for she was afraid. He said, "Oh yes, you did laugh."
21:1 The LORD dealt with Sarah as he had said, and the LORD did for Sarah as he had promised.
21:2 Sarah conceived and bore Abraham a son in his old age, at the time of which God had spoken to him.
21:3 Abraham gave the name Isaac to his son whom Sarah bore him.
21:4 And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.
21:5 Abraham was a hundred years old when his son Isaac was born to him.
21:6 Now Sarah said, "God has brought laughter for me; everyone who hears will laugh with me."
21:7 And she said, "Who would ever have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age."
