Genesis 17:15-Genesis 18:21 - Isaac's Birth Promised
15 And God said to Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. 16 And I will bless her, and give thee a son also by her: yea, I will bless her, and she shall be a mother of nations; kings of people shall proceed from her.
17 Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born to him that is a hundred years old? and shall Sarah, who is ninety years old, bear? 18 And Abraham said to God, O that Ishmael might live before thee!
19 And 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. 20 And as for Ishmael, I have heard thee: 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 to thee at this set time in the next year. 22 And he ceased 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 foreskin, in the same day, as God had said to him. 24 And Abraham was ninety and nine years old, 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 of the stranger, were circumcised with him.
1 And the LORD appeared to him in the plains 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 thy sight, pass not away, I pray thee, from thy servant: 4 Let a little water, I pray you, be brought, and wash your feet, and rest yourselves under the tree: 5 And I will bring a morsel of bread, and comfort ye your hearts; after that you shall pass on: for therefore are ye come to your servant. And they said, So do, as thou hast said.
6 And Abraham hastened into the tent to Sarah, and said, Make ready quickly three measures of fine meal, knead it, and make cakes upon the hearth. 7 And Abraham ran to the herd, and brought a calf tender and good, and gave it to a young man; and he hasted 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 ate.
9 And they said to him, Where is Sarah thy wife? And he said, Behold, in the tent.
10 And he said, I will certainly return to 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.
11 Now Abraham and Sarah were old and far advanced in age; and it ceased to be with Sarah after the manner of women. 12 Therefore Sarah laughed within herself, saying, After I am become old shall I have pleasure, my lord being old also?
13 And the LORD said to Abraham, Why did Sarah laugh, saying, Shall I certainly bear a child, who am old? 14 Is any thing too hard for the LORD? At the time appointed I will return to thee, 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 thou didst laugh.
16 And the men rose up from thence, 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 will keep the way of the LORD, to do justice and judgment; that the LORD may bring upon Abraham that which he hath spoken of him. 20 And the LORD said, Because the cry of Sodom and Gomorrah is great, and because their sin is very grievous; 21 I will go down now, and see whether they have done altogether according to the cry of it, which is come to me; and if not, I will know.