Treasury of Scripture Knowledge

Summary

And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.

Bible References

In isaac

Romans 9:7
nor are they all children of Abraham because they are his descendants; but, "Through Isaac shall your descendants be named."
Hebrews 11:18
of whom it was said, "Through Isaac shall your descendants be called."