And he gets the symbols painted on his soldier's shield, and he's victorious. And this date, 312, Milvian Bridge, the Battle at Milvian Bridge, is viewed as the beginning of Constantine's conversion to Christianity, viewing it as his chosen faith. In 313, the Roman emperor or the empire issues the Edict of Milan, which officially makes Christianity okay. It legalizes Christianity, which is a big deal because these folks have been persecuted all this time. They haven't been worshiping the Roman gods. Then in 325, Constantine goes even further, and he convenes the Council of Nicaea where he brings the bishops from all of Christendom together to start having a more unified belief system. They come up with the Nicaean Creed.