Genesis 17:16-21
And I will bless her, and give you a son also of her: yes, I will bless her, and she shall be a mother of nations; kings of people shall be of her.
Nave's Topical Index—AKJV

Genesis 18:10-14
And he said, I will certainly return to you according to the time of life; and, see, Sarah your wife shall have a son. And Sarah heard it in the tent door, which was behind him.
Nave's Topical Index—AKJV

Genesis 21:12
And God said to Abraham, Let it not be grievous in your sight because of the lad, and because of your female slave; in all that Sarah has said to you, listen to her voice; for in Isaac shall your seed be called.
Nave's Topical Index—AKJV

Genesis 26:2-5,24
And the LORD appeared to him, and said, Go not down into Egypt; dwell in the land which I shall tell you of:
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Exodus 32:13
Remember Abraham, Isaac, and Israel, your servants, to whom you swore by your own self, and said to them, I will multiply your seed as the stars of heaven, and all this land that I have spoken of will I give to your seed, and they shall inherit it for ever.
Nave's Topical Index—AKJV

1 Chronicles 16:16
Even of the covenant which he made with Abraham, and of his oath to Isaac;
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Romans 9:7
Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall your seed be called.
Nave's Topical Index—AKJV