Why were the Roman authorities hostile to Christians? Why did Christians refuse to worship the Roman emperor as a god?

The hostile attitude of the Roman authorities towards Christian communities is primarily due to the obligatory veneration of the gods of Rome, who contribute to success in any activity. With the formation of a vast empire, a single religious cult was created with the veneration of the emperor as the representative of all gods, both national and conquered peoples. In this context, Christianity was considered an unlawful faith, witchcraft, magic, a criminal conspiracy that destroyed the laws of the empire. The Christian denomination, not recognizing any gods except the one Christ, thereby insulted the Roman gods and the Roman emperor, as the representative of these gods.