Matthew Poole and continuators on Galatians 4:30

30 Nevertheless, what saith the scripture? Cast out the bond-woman and her son, for the son of the bond-woman shall not be heir with the son of the free-woman .

We read Gen. 21.10. that when Sarah saw Ishmael mocking at her Son Isaac, she was not able to bear it, but speaketh to her Husband Abraham, saying, Cast out this bond-woman, and her Son, for the Son of this bond-woman shall not be heir with my Son, even Isaac. The principal design of the Apostle seems to be, by that Type of the ejection of Ishmael out of Abrahams Family, to let them know the mind and will of God. 1. Concerning the exclusion of the Law from a partnership with Christ, and the Gospel, in the justification of sinners before God. 2. Concerning the rejection of the Jews, upon the calling of the Gentiles. 3. Concerning the total destruction of the Jewish Church and Nation, for their persecution of Christ, and the Christian Church.

Marginal references: Joh. 8.35.