17:15And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be.

17:16And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall be of her.

17:17Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is an hundred years old? and shall Sarah, that is ninety years old, bear?

17:18And Abraham said unto God, O that Ishmael might live before thee!

17:19And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him.

18:1And the LORD appeared unto him in the plains of Mamre: and he sat in the tent door in the heat of the day;

18:2And he lift up his eyes and looked, and, lo, three men stood by him: and when he saw them, he ran to meet them from the tent door, and bowed himself toward the ground,

18:3And said, My Lord, if now I have found favour in thy sight, pass not away, I pray thee, from thy servant:

18:4Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree:

18:5And I will fetch a morsel of bread, and comfort ye your hearts; after that ye shall pass on: for therefore are ye come to your servant. And they said, So do, as thou hast said.

18:6And Abraham hastened into the tent unto Sarah, and said, Make ready quickly three measures of fine meal, knead it, and make cakes upon the hearth.

18:7And Abraham ran unto the herd, and fetcht a calf tender and good, and gave it unto a young man; and he hasted to dress it.

18:8And he took butter, and milk, and the calf which he had dressed, and set it before them; and he stood by them under the tree, and they did eat.

18:9And they said unto him, Where is Sarah thy wife? And he said, Behold, in the tent.

18:10And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.

18:11Now Abraham and Sarah were old and well stricken in age; and it ceased to be with Sarah after the manner of women.

18:12Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?

18:13And the LORD said unto Abraham, Wherefore did Sarah laugh, saying, Shall I of a surety bear a child, which am old?

18:14Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.

18:15Then Sarah denied, saying, I laughed not; for she was afraid. And he said, Nay; but thou didst laugh.

21:1And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.

21:2For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

21:3And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.

21:4And Abraham circumcised his son Isaac being eight days old, as God had commanded him.

21:5And Abraham was an hundred years old, when his son Isaac was born unto him.

21:6And Sarah said, God hath made me to laugh, so that all that hear will laugh with me.

21:7And she said, Who would have said unto Abraham, that Sarah should have given children suck? for I have born him a son in his old age.

21:8And the child grew, and was weaned: and Abraham made a great feast the same day that Isaac was weaned.