Galatians 4:21-31

21Tell me, ye who are desirous of being under law, do ye not listen to the law? 22For it is written that Abraham had two sons; one of the maid servant, and one of the free woman. 23But he [that was] of the maid servant was born according to flesh, and he [that was] of the free woman through the promise. 24Which things have an allegorical sense; for these are two covenants: one from mount Sinai, gendering to bondage, which is Hagar. 25For Hagar is mount Sinai in Arabia, and corresponds to Jerusalem which [is] now, for she is in bondage with her children; 26but the Jerusalem above is free, which is our mother. 27For it is written, Rejoice, thou barren that bearest not; break out and cry, thou that travailest not; because the children of the desolate are more numerous than [those] of her that has a husband. 28But ye, brethren, after the pattern of Isaac, are children of promise. 29But as then he that was born according to flesh persecuted him [that was born] according to Spirit, so also [it is] now. 30But 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. 31So then, brethren, we are not maid servant's children, but [children] of the free woman.