Reside in this land as an alien, and I will be with you and will bless you, for to you and to your descendants I will give all these lands, and I will fulfill the oath that I swore to your father Abraham.
And the Lord stood beside him and said, “I am the Lord, the God of Abraham your father and the God of Isaac; the land on which you lie I will give to you and to your offspring,
But the Lord was gracious to them and had compassion on them; he turned toward them because of his covenant with Abraham, Isaac, and Jacob and would not destroy them, nor has he banished them from his presence until now.
and you found his heart faithful before you and made with him a covenant to give to his descendants the land of the Canaanite, the Hittite, the Amorite, the Perizzite, the Jebusite, and the Girgashite, and you have fulfilled your promise, for you are righteous.
that I may perform the oath that I swore to your ancestors, to give them a land flowing with milk and honey, as at this day.’ ” Then I answered, “So be it, Lord.”
Then he gave him the covenant of circumcision. And so Abraham became the father of Isaac and circumcised him on the eighth day, and Isaac did likewise to Jacob and Jacob to the twelve patriarchs.
My point is this: the law, which came four hundred thirty years later, does not annul a covenant previously ratified by God, so as to nullify the promise.
In the same way, when God desired to show even more clearly to the heirs of the promise the unchangeable character of his purpose, he guaranteed it by an oath,