Hebrews 11:18 References

18 it was he to whom it was said, "aIN ISAAC YOUR DESCENDANTS SHALL BE CALLED."

a Genesis 21:12, Romans 9:7

Genesis 21

12 But God said to Abraham, "Do not be distressed because of the lad and your maid; whatever Sarah tells you, listen to her, for athrough Isaac your descendants shall be named.

Romans 9

7 nor are they all children abecause they are Abraham's descendants, but: "bTHROUGH ISAAC YOUR DESCENDANTS WILL BE NAMED."