Genesis 21:10
Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.
Genesis 21:12
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.
Genesis 21:13
And also of the son of the bondwoman will I make a nation, because he is thy seed.
Galatians 4:23
But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.
Galatians 4:30
Nevertheless what saith the scripture? Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.
Galatians 4:31
So then, brethren, we are not children of the bondwoman, but of the free.