Constantine was the emperor in Rome at the time when he called the in 325 CE. Constantine was originally a worshipper of the sun god. Later in his life he converted to Christianity. His reign marked the beginning of the joining of church and state. The pagans no longer persecuted Christians. Instead, Christians persecuted others, including other Christians. Christians killed more Christians in the first century after the than pagans had killed in the century before Nicea. One year after calling the Constantine had his own son, Crispus, put ....