For it has been written, that Abraham had two sons, one by the bondmaid, and one by the free.
And Hagar brought forth a son to Abram, and Abram shall call his name which Hagar brought forth, Ishmael.
And she will say to Abraham, Cast out this maid-servant and her son; for the son of this maid-servant shall not inherit with my son, with Isaak.
But he truly of the bondmaid was born according to the flesh; and he of the free through the promise.
But what says the writing? Cast out the bondmaid and her son; for the son of the bondmaid shall not inherit with the son of the free.
Therefore, brethren, we are not children of the bondmaid, but of the free.