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.
And the servant remains not in the house forever; the Son remains forever.
Or think ye that the writing says vainly, That the spirit longs for envy, which dwelt in us?
But the writing shut up all things under sin, that the promise from faith of Jesus Christ might be given to the believing.
And the writing, foreseeing that of faith God justifies the nations, announced beforehand the good news to Abraham, That in thee shall all nations be praised.
God has not rejected his people whom he foreknew. Or know ye not in Elias, what says the writing? how he addresses God against Israel, saying,
For what says the writing? And Abraham believed God, and it was reckoned to him for justice.
For it has been written, that Abraham had two sons, one by the bondmaid, and one by the free.
Therefore, brethren, we are not children of the bondmaid, but of the free.