28. But ye, brethren, after the pattern of Isaac, are children of promise.
29. But as then he that was born according to flesh persecuted him that was born according to Spirit, so also it is now.
30. But what says the scripture? Cast out the maid servant and her son; for the son of the maid servant shall not inherit with the son of the free woman.
31. So then, brethren, we are not maid servant's children, but children of the free woman.