Genesis 17:15-Genesis 18:21 - Isaac's Birth Promised
15 And God said unto Abraham, As for Sarai your wife, you shall not call her name Sarai, but Sarah shall her name be. 16 And I will bless her, and give you a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall come from her.
17 Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is a hundred years old? and shall Sarah, that is ninety years old, bear? 18 And Abraham said unto God, O that Ishmael might live before you!
19 And God said, Sarah your wife shall bear you a son indeed; and you shall call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his descendants after him. 20 And as for Ishmael, I have heard you: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation. 21 But my covenant will I establish with Isaac, whom Sarah shall bear unto you at this set time in the next year. 22 And he quit talking with him, and God went up from Abraham.
23 And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham's house; and circumcised the flesh of their foreskins in the same day, as God had said unto him. 24 And Abraham was ninety years old and nine, when he was circumcised in the flesh of his foreskin. 25 And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin. 26 In the same day was Abraham circumcised, and Ishmael his son. 27 And all the men of his house, born in the house, and bought with money from a foreigner, were circumcised with him.
1 And the LORD appeared unto him by the oaks of Mamre: and he sat in the tent door in the heat of the day; 2 And he lifted 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, 3 And said, My Lord, if now I have found favor in your sight, pass not away, I pray you, from your servant: 4 Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree: 5 And I will fetch a morsel of bread, and comfort your hearts; after that you shall pass on: for therefore are you come to your servant. And they said, So do, as you have said.
6 And 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. 7 And Abraham ran unto the herd, and fetched a calf tender and good, and gave it unto a young man; and he hastened to dress it. 8 And 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.
9 And they said unto him, Where is Sarah your wife? And he said, Behold, in the tent.
10 And he said, I will certainly return unto you according to the time of life; and, lo, Sarah your wife shall have a son. And Sarah heard it in the tent door, which was behind him.
11 Now Abraham and Sarah were old and well stricken in age; and it ceased to be with Sarah after the manner of women. 12 Therefore Sarah laughed within herself, saying, After I have grown old shall I have pleasure, my lord being old also?
13 And the LORD said unto Abraham, Why did Sarah laugh, saying, Shall I of a certainty bear a child, who am old? 14 Is anything too hard for the LORD? At the time appointed I will return unto you, according to the time of life, and Sarah shall have a son.
15 Then Sarah denied, saying, I laughed not; for she was afraid. And he said, Nay; but you did laugh.
16 And the men rose up from there, and looked toward Sodom: and Abraham went with them to bring them on the way. 17 And the LORD said, Shall I hide from Abraham that thing which I do; 18 Seeing that Abraham shall surely become a great and mighty nation, and all the nations of the earth shall be blessed in him? 19 For I know him, that he will command his children and his household after him, and they shall keep the way of the LORD, to do righteousness and justice; that the LORD may bring upon Abraham that which he has spoken of him. 20 And the LORD said, Because the cry of Sodom and Gomorrah is great, and because their sin is very grave; 21 I will go down now, and see whether they have done altogether according to the outcry, which has come unto me; and if not, I will know.