offspring from Isaac
Everlasting Covenant Through Offspring From Isaac
Gen. 17:19 God said, “No, but Sarah, your wife, will bear you a son. You shall call his name Isaac. I will establish my covenant with him for an everlasting covenant for his offspring after him.
Romans 9:7 Neither, because they are Abraham’s offspring, are they all children. But, “your offspring will be accounted as from Isaac.”