Galatians 4:23-30

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.