Gen 17:19, 21:12, Rom 9:7 | ESV | STEP | God said , No , but Sarah your wife shall bear you a son , and you shall call his name Isaac . I will establish my covenant with him as an everlasting covenant for his offspring after him.

Genesis 17:19

19 God said, “No, but ^aSarah your wife shall bear you a son, and you shall call his name ^bIsaac. ^{▼▼ Isaac means he laughs} I will establish my covenant with him as an everlasting covenant for his offspring after him.

Genesis 21:12

12 But God said to Abraham, “Be not displeased because of the boy and because of your slave woman. Whatever Sarah says to you, do as she tells you, for ^dthrough Isaac shall your offspring be named.

Romans 9:7

7 and not all are children of Abraham ^ebecause they are his offspring, but ^f“Through Isaac shall your offspring be named.”