And Mary said, "See, the handmaid of the Lord; be it to me according to your word." The angel departed from her.

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

However, the son by the handmaid was born according to the flesh, but the son by the free woman was born through promise.

However what does the Scripture say? "Throw out the handmaid and her son, for the son of the handmaid will not inherit with the son of the free woman."

So then, brothers, we are not children of a handmaid, but of the free woman.