Galatians 4:22-30

22For it is written, that Abraham had two sons, one by the handmaid, and one by the freewoman. 23Howbeit the son by the handmaid is born after the flesh; but the son by the freewoman is born through promise. 24Which things contain an allegory: for these women are two covenants; one from mount Sinai, bearing children unto bondage, which is Hagar. 25Now this Hagar is mount Sinai in Arabia and answereth to the Jerusalem that now is: for she is in bondage with her children. 26But the Jerusalem that is above is free, which is our mother. 27For it is written,

28Now we, brethren, as Isaac was, are children of promise. 29But as then he that was born after the flesh persecuted himthat was bornafter the Spirit, so also it is now. 30Howbeit what saith the scripture? Cast out the handmaid and her son: for the son of the handmaid shall not inherit with the son of the freewoman.