Genesis 17:19,21
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 seed after him.
Torrey's Topical Textbook—AKJV

Genesis 26:3,4
Sojourn in this land, and I will be with you, and will bless you; for to you, and to your seed, I will give all these countries, and I will perform the oath which I swore to Abraham your father;
Torrey's Topical Textbook—AKJV