19 God said, “No, but ^gSarah your wife shall bear you a son, and you shall call his name ^hIsaac.¹ I will establish my covenant with him as an everlasting covenant for his offspring after him.

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 ^xthrough Isaac shall your offspring be named.