Treasury of Scripture Knowledge
Summary
For it is written, that Abraham had two sons, the one by a bondmaid, the other by a freewoman.
That
Bible References
That
Genesis 16:2
So Sarai said to Abram, "Since the Lord has prevented me from having children, have sexual relations with my servant. Perhaps I can have a family by her." Abram did what Sarai told him.
Genesis 21:1
The Lord visited Sarah just as he had said he would and did for Sarah what he had promised.