Genesis 21:12
But God said to Abraham, "Do not be upset about the boy or your slave wife. Do all that Sarah is telling you because through Isaac your descendants will be counted.
Hebrews 11:18
God had told him, "Through Isaac descendants will carry on your name,"
Genesis 17:19
God said, "No, Sarah your wife is going to bear you a son, and you will name him Isaac. I will confirm my covenant with him as a perpetual covenant for his descendants after him.
Genesis 17:21
But I will establish my covenant with Isaac, whom Sarah will bear to you at this set time next year."
1 Samuel 8:7
The Lord said to Samuel, "Do everything the people request of you. For it is not you that they have rejected, but it is me that they have rejected as their king.
1 Samuel 8:9
So now do as they say. But seriously warn them and make them aware of the policies of the king who will rule over them."
Isaiah 46:10
who announces the end from the beginning and reveals beforehand what has not yet occurred, who says, 'My plan will be realized, I will accomplish what I desire,'
Romans 9:7-8
nor are all the children Abraham's true descendants; rather "through Isaac will your descendants be counted."