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, because they are Abraham's descendants, are they all his Children; but-'It is Isaac's children who will be called thy descendants.'
Hebrews 11:18
of whom it had been said-- 'It is through Isaac that there shall be descendants to bear thy name.'