Hebrews 6:17

6:17 In the same way God wanted to demonstrate more clearly to the heirs of the promise that his purpose was unchangeable, and so he intervened with an oath,

Genesis 26:3-4

26:3 Stay in this land. Then I will be with you and will bless you, for I will give all these lands to you and to your descendants, and I will fulfill the solemn promise I made to your father Abraham. 26:4 I will multiply your descendants so they will be as numerous as the stars in the sky, and I will give them all these lands. All the nations of the earth will pronounce blessings on one another using the name of your descendants.

Genesis 28:4

28:4 May he give you and your descendants the blessing he gave to Abraham so that you may possess the land God gave to Abraham, the land where you have been living as a temporary resident.”

Genesis 28:13-14

28:13 and the Lord stood at its top. He said, “I am the Lord, the God of your grandfather Abraham and the God of your father Isaac. I will give you and your descendants the ground you are lying on. 28:14 Your descendants will be like the dust of the earth, and you will spread out to the west, east, north, and south. All the families of the earth will pronounce blessings on one another using your name and that of your descendants.

Genesis 48:3-4

48:3 Jacob said to Joseph, “The sovereign God appeared to me at Luz in the land of Canaan and blessed me. 48:4 He said to me, ‘I am going to make you fruitful and will multiply you. I will make you into a group of nations, and I will give this land to your descendants as an everlasting possession.’