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

And Hagar bare Abram a son, and Abram called his son's name which Hagar bare, Ishmael.

Wherefore she said unto Abram, "Behold the LORD hath closed me, that I can not bear. I pray thee go in unto my maid, peradventure I shall be multiplied by means of her." And Abram heard the voice of Sarai.

The LORD visited Sara as he had said, and did unto her according as he had spoken.

Then she said unto Abraham, "Put away this bondmaid and her son: for the son of this bondwoman shall not be heir with my son Isaac."

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

Wherefore she said unto Abram, "Behold the LORD hath closed me, that I can not bear. I pray thee go in unto my maid, peradventure I shall be multiplied by means of her." And Abram heard the voice of Sarai.
The LORD visited Sara as he had said, and did unto her according as he had spoken.
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