Acts 8:30 - Ellicott's Commentary On The Whole Bible

Understandest thou what thou readest? — The Greek play upon the word for understand (Ginôskein) and read (Anaginôskein) cannot well be produced in English, but is worth noting as parallel to a like play in the well-known saying of the Emperor Julian (Anegnôn; egnôn; kategnôn) — “I read; I understood; I condemned.”