Mark 9:28

και εισελθοντα αυτον εις οικον οι μαθηται αυτου επηρωτων αυτον κατ ιδιαν οτι ημεις ουκ ηδυνηθημεν εκβαλειν αυτο

kai eiselthonta ayton eis oikon oi mathētai aytoy epērōtōn ayton kat idian oti ēmeis oyk ēdynēthēmen ekbalein ayto

King James Version (KJV)

And when he was come into the house, his disciples asked him privately, Why could not we cast him out?

Modern English

When he had come into the house, his disciples asked him privately, “Why couldn’t we cast it out?”