linguistic:paraphrasing
Authoritarian rule

Justinian's religious policy reflected the Imperial conviction that the unity of the Empire presupposed unity of faith, and it appeared to him obvious that this faith could only be the orthodoxy (Chalcedonian). Those of a different belief were subjected to persecution, which imperial legislation had effected from the time of Constantius II and which would now vigorously continue. The Codex contained two statutes that decreed the total destruction of paganism, even in private life; these provisions were zealously enforced. Contemporary sources (John Malalas, Theophanes, and John of Ephesus) tell of severe persecutions, even of men in high position.

The original Academy of Plato had been destroyed by the Roman dictator Sulla in 86 BC. Several centuries later, in 410 AD, a Neoplatonic Academy was established that had no institutional continuity with Plato's Academy, and which served as a center for Neoplatonism and mysticism. It persisted until 529 AD when it was finally closed by Justinian I. Other schools in Constantinople, Antioch, and Alexandria, which were the centers of Justinian's empire, continued.

In Asia Minor alone, John of Ephesus was reported to have converted 70,000 pagans, which was probably an exaggerated number. Other peoples also accepted Christianity: the Heruli, the Huns dwelling near the Don, the Abasgi, and the Tzanni in Caucasia.

The worship of Amun at the oasis of Awjila in the Libyan desert was abolished, and so were the remnants of the worship of Isis on the island of Philae, at the first cataract of the Nile. The Presbyter Julian and the Bishop Longinus conducted a mission among the Nabataeans, and Justinian attempted to strengthen Christianity in Yemen by dispatching a bishop from Egypt.

The civil rights of Jews were restricted and their religious privileges threatened. Justinian also interfered in the internal affairs of the synagogue and encouraged the Jews to use the Greek Septuagint in their synagogues in Constantinople.

The Emperor faced significant opposition from the Samaritans, who resisted conversion to Christianity and were repeatedly in insurrection. He persecuted them with rigorous edicts, but could not prevent reprisals towards Christians from taking place in Samaria toward the close of his reign. The consistency of Justinian's policy meant that the Manicheans too suffered persecution, experiencing both exile and threat of capital punishment. At Constantinople, on one occasion, not a few Manicheans, after strict inquisition, were executed in the emperor's very presence: some by burning, others by drowning.