Treasury of Scripture Knowledge

Summary

For it is written, that Abraham had two sons, the one by a bondmaid, the other by a freewoman.

Bible References

That

Genesis 16:2
And Sarai will say to Abram, Behold now, Jehovah restrained me from bringing forth; go now to my maid servant; perhaps I shall have children from her. And Abram will listen to the voice of Sarai.
Genesis 21:1
And Jehovah reviewed Sarah as he said; and Jehovah will do to Sarah as he spake.