In the 1st century, Christianity was banned by the authorities and envied by the Jewish leaders, so Christianity was limited to the common people and poor slaves. The activities of Christianity must hide under the shadow of Judaism in order to be safe.|Around the year 60, many Saint Apostles were murdered by the authorities, including 2: Paul and Peter (Pierre) were murdered in Rome (Rome). Peter was killed by crucifixion, but his head was turned upside down.|In the 2nd century, Christianity was believed by many people, trained a number of professional missionaries, and started the formation of the Church.|In the 3rd century, Christianity developed better, many rich and powerful people believed in the religion. The government of the Roman Empire also began to change its attitude, from forbidding religion, to supporting and creating conditions for Christianity to develop, to stabilize the social order, and to strengthen the Empire. The reign of King Diocletien (258-305) abolished the ban on Christianity.