Hebrews 11:18
with reference to whom it was said, "In Isaac your descendants will be named,"
Genesis 21:12
Then God said to Abraham, "{Do not be displeased} on account of the boy and on account of the slave woman. {Listen to everything that Sarah said to you}, for through Isaac [your] offspring will be named.
Romans 9:7
nor [are they] all children because they are descendants of Abraham, but "In Isaac will your descendants be named."
Genesis 17:19
And God said, "No, but Sarah your wife shall bear a son for you, and you shall call his name Isaac. And I will establish my covenant with him as an everlasting covenant to his offspring after him.