Before certain emissaries of James arrived, he ate along with the Gentile Christians; but when they arrived, he began to draw back and hold aloof, because he was afraid of the circumcision party.

The rest of the Jewish Christians also played false along with him, so much so that even Barnabas was carried away by their false play.

So that those who rely on faith are blessed along with believing Abraham.

However, what does the scripture say? Put away the slave-woman and her son, for the son of the slave-woman shall not be heir along with the son of the free-woman.