One of the most common objections about the Bible is that it was supposedly created by Roman Emperor Constantine at the Council of Nicea in AD 325. Of course, that's not true. It's mythology, not history. So what really happened at the council of Nicea?
Did Constantine change the Sabbath from Saturday to Sunday? The Edict of Milan is a proclamation by Roman emperor Constantine I, given in 313 AD, that ensured the right of all Roman citizens to worship freely. It also instructed that any property that had been confiscated from Christians should be returned.