Sarah saw the son of the Egyptian, mocking Mocking Isaac, no doubt, for it is said, with reference to this, Galatians 4:29, that “he that was born after the flesh, persecuted him that was born after the spirit.”
Related Commentaries of Genesis 21:9
Genesis 21:9
9 And Sarah saw the son of Hagar the Egyptian, which she had born unto Abraham, mocking.