Three centuries after John died the church faced major threats on the inside and out. On the outside, the power of the Romans. At first the Romans tolerated all religions, but when they realized the Christians wanted to triumph over all the declared war on the Christians. Constantine won the battle and said it was because of Christ. He then became emperor of the West. In 313 Constantine met with the emperor of the eastern half of the empire, they met in Milan and agreed on a policy of total religious tolerance for Christians and it became the official religion of the Empire.