28. Now you, brothers, like Isaac, are children of promise.
29. But just as then the child born according to the flesh persecuted the one born according to the Spirit, so also now.
30. But what does the Scripture say?Drive out the slave and her son, for the son of the slave will never be a coheir with the son of the free woman.
31. Therefore, brothers, we are not children of the slave but of the free woman.