Galatians 4:28, Paul Steals the Inheritance
Now we, brethren, as Isaac was, are the children of promise.
//In the Old Testament, Abraham had two children: Isaac, who became the father of the Jews, and Ishmael, who became the father of the Arabs. So we have the Jews, the “children of promise,” and we have the Gentiles, the son of a bondswoman (an illegitimate wife).
Abraham, according to God’s instruction, sends Ishmael and his mother off into the desert with nothing, and gave everything to Isaac.
Paul, writing to the Galatians, begins to tell the story like this:
For it is written, that Abraham had two sons, the one by a bondmaid, the other by a freewoman. –Galatians 4:22
But then Paul pulls a switcharoo. Speaking to the Galatian Christians, he says they are the children of promise; the “Isaac” of God. In contrast, the Jews are “Ishmael,” son of the bondwoman. See today’s verse above.
In this way Paul steals the inheritance from the Jews.