Galatians 4:22

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

Genesis 16:15

So Hagar gave birth to Abram's son, whom Abram named Ishmael.

Genesis 16:2-4

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 21:1-2

The Lord visited Sarah just as he had said he would and did for Sarah what he had promised.

Genesis 21:10

So she said to Abraham, "Banish that slave woman and her son, for the son of that slave woman will not be an heir along with my son Isaac!"

Treasury of Scripture Knowledge

Summary

Galatians 4:22

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

That

Genesis 16:2

Genesis 21:1

Bible References

That

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.

The Lord visited Sarah just as he had said he would and did for Sarah what he had promised.