Galatians 4:29

But as then he - Ishmael, who was born after the flesh - whose birth had nothing supernatural in it, but was according to the ordinary course of nature,

Persecuted him - Isaac, who was born after the Spirit - who had a supernatural birth, according to the promise, and through the efficacy, of the Holy Spirit, giving effect to that promise - Sarah shall have a son, Genesis 17:16-21 ; Genesis 21:1 , etc.

Persecuted him; the persecution here referred to is that mentioned Genesis 21:9 . It consisted in mocking his brother Isaac.

Even so it is now - So the Jews, in every place, persecute the Christians; and show thereby that they are rather of the posterity of Hagar than of Sarah.