Theophilus was the 23rdPope of Alexandria and Patriarch of the See of St. Mark. He became Pope at a time of conflict between the newly dominant Christians and the pagan establishment in Alexandria, each of which was supported by a segment of the Alexandrian populace.
Background
In 391, Theophilus discovered a hidden pagan temple. He and his followers mockingly displayed the pagan artifacts to the public which offended the pagans enough to provoke an attack on the Christians. The Christian faction counter-attacked, forcing the pagans to retreat to the Serapeum. A letter was sent by the emperor that Theophilus should grant the offending pagans pardon, but destroy the temple; according to Socrates Scholasticus, a contemporary of his, the latter aspect was added as a result of heavy solicitation for it by Theophilus. Scholasticus goes on to state that: The destruction of the Serapeum was seen by many ancient and modern authors as representative of the triumph of Christianity over other religions. According to John of Nikiu in the 7th century, when the philosopher Hypatia was lynched and flayed by an Alexandrian mob, they acclaimed Theophilus's nephew and successor Cyril as "the new Theophilus, for he had destroyed the last remains of idolatry in the city". Theophilus turned on the followers of Origen after having supported them for a time. He switched his view of God from the incorporeal view of God held by Origen to the anthropomorphic view held by many local monks who were hostile to his pastoral letter of 399. He was accompanied by his nephew Cyril to Constantinople in 403 and there presided at the "Synod of the Oak" that deposed John Chrysostom. On 10 July in the Eastern Orthodox Synaxarion, there is a commemoration for the 10,000 monks slain on the orders of Pope Theophilus in his paranoid campaign against perceived Origenism and the Four Tall Brethren. His nephew and dynastic successor Cyril was canonized in both Eastern and Western Christendom, with the notable exception of the Assyrian Church of the East, for his articulation and defense of the hypostatic union, his central role at the First Council of Ephesus, and his opposition to Patriarch Nestorius of Constantinople.
Other homilies survive only in Coptic and Ge'ez translations.
Theophilus’ Paschal table
Theophilus obliged the pious Christian emperor Theodosius I to himself by dedicating his Paschal table to him. Theophilus’ Paschal table did not survive, but what we do know is that the Metonic 19-year lunar cycle underlying it must have been very different from the very first similar lunar cycle which somewhere in the third quarter of the third century was invented by Anatolius but differed very little from the classical Alexandrian 19-year lunar cycle, which in the fifthe century would be introduced by Annianus and adopted by Theophilus’ successor Cyrillus and whose julian equivalent would become the Metonicbasic structure of Dionysius Exiguus’ Paschal table. Bede's Paschal table is an exact extension of Dionysius Exiguus' one.
The lunar crater Theophilus was named after him, as part of a group of three lunar craters named after prominent Alexandrian Christians. Pope Theophilus is venerated as a saint only within the Coptic Church of Alexandria; his sainthood is not recognized by the Eastern Orthodox, Roman Catholic, or Assyrian Churches.
