Chronicles how the Christian movement would face new challenges both internal and external. In the period between 100 and 300 C.E., the Christian movement grew throughout the Roman empire. At times there were heated debates about beliefs, worship, and even about Jesus himself. The Christian movement also faced external threats; it became suspicious in the eyes of the Roman authorities and Christians were persecuted. But the Christian movement pulled together and in the end, what started as a small sect of Judaism became a significant part of the population, enough so that the new Roman emperor Constantine decided that they should be part of the official religion of Rome. This was a momentous change for Christianity. As the fourth century dawned, the cross was transformed into a symbol of triumph and Jesus of Nazareth became Jesus Christ. In only three hundred years, the empire that had sent Jesus to his death embraced Christianity as an official religion and worshipped him as divine.