But as then he that was born after the flesh persecuted him that was born after the Spirit, even so it is now.
All Commentaries on Galatians 4:29 Go To Galatians 4
Jerome
AD 420
Ishmael, the elder brother, persecuted him while still a nursing infant, claiming for himself the prior right of circumcision and the inheritance of the firstborn…. And it is aptly said that he who is born according to nature persecutes the spiritual. The spiritual one never persecutes the natural one but forgives him like an untutored brother, for he knows that he may progress. –.