Origen of Alexandria : When you build a house, you do not quit before building the protective parapet of the house. It is this parapet that prevents one who has ascended onto the house from falling. So it is with the house of the Word. Consequently those who fall because of unfinished buildings fall only from houses which lack the parapet. Those architects and builders bear the blame for such slaughters and falls. — COMMENTARY ON THE GOSPEL OF John 6.7