A.T. Robertson Commentary John 9:32

"Since the world began it was never heard that any one opened the eyes of a man born blind." — John 9:32 (ASV)

Since the world began (εκ του αιωνος). Literally, "from the age," "from of old." Elsewhere in the N.T. we have απο του αιωνος or απ 'αιωνος (Luke 1:70; Acts 3:31; Acts 15:18) as is common in the LXX.

Of a man born blind (τυφλου γεγεννημενου). Perfect passive participle of γενναω. This is the chief point and the man will not let it be overlooked, almost rubs it in, in fact. It was congenital blindness.