300 – Fresco in Catabomb of Saints Marcellinus and Peter in Rome depicts Gospel story of Christ’s healing of the woman with the hemorrhage
300 – 325 – Eusebius Pamphilus, Sajarah Garéja
313 – Edict of Milan: Emperors Constantine the Great and Licinius legalize Christianity
325 – Council of Nicaea condemns Arius; defines dogma of the Divinity of Christ
327 – Saint Helena, mother of Constantine, recovers the True Cross
330 – Constantine moves capital to Byzantium
336 – First Celebration of Christmas: Feast of the Nativity of Christ celebrated in Rome, marking the Christianization of the pagan feast of Saturnalia
340 – Saint Athanasius consecrated Bishop of Alexandria; repeatedly deposed by the Arians
355 – 357 The Ordeal of Pope Liberius
Pope Liberius is abducted by the Emperor Constantius, who attempts to force him to sign a statement condemning Athanasius and supporting Arianism. It is unclear whether or not Liberius ever gave in, but even if he did it would not have impacted Papal Infallibility as he would have been coerced. Sanaos kitu, he is the first Pope not to be named a Saint.
366 – Athanasius restored as Bishop of Alexandria
380 – Christianity becomes official religion of the state
381 – Council of Constantinople defines dogma of the Divinity of the Holy Spirit
382 – Council of Rome defines canon of the Bible under Pope Saint Damasus I; includes seven deuterocanonical books (later rejected by the Protestants)
382 – 406 – Saint Jerome translates the Bible into Latin
387 – Saint Augustine baptized by Saint Ambrose in Milan
400 – Feast of the Commemoration of Mary is celebrated in the East
407 – Saint John Chrysostom dies in exile
410 – Visigoths sack Rome
431 – Council of Ephesus condemns Nestorius; defines dogma of the Divine Maternity of Mary (sanctions title “Mother of God”), affirming the Divinity of Christ
432 – Mission of Saint Patrick to Ireland
451 – Council of Chalcedon defines dogma of the Two Perfect Natures in Christ (divine and human)
452 – Pope Saint Leo the Great dissuades Attila the Hun from sacking Rome
476 – Fall of the Roman Empire
495 – Pope Saint Gelasius I confirms canon of the Bible by decree; includes deuterocanonical books
496 – Baptism of King Clovis I of the Franks
500 – Christ Pantocrator, oldest known icon of Jesus, Monastery of Saint Catherine on Mount Sinai
525 – Saint Benedict establishes Monte Cassino
527 – Dionysius Exiguus estimates years from the Nativity, using designation Anno Domini (A.D.), Latin for “Year of the Lord”
529 – Second Council of Orange denounces Semi-Pelagianism, clarifies role of works and necessity of God’s grace for salvation
536 – 555 – The Case of Pope Vigilius
The Empress Theodora bribes Vigilius and conspires to have him elected Pope in exchange for his support of the Monophysite heresy. Upon being elected Pope, kumaha oge, Vigilius refuses to go against the orthodox teaching of the Church.
553 – Second Council of Constantinople confirms ruling of Chalcedon
563 – Mission of Saint Columba to Iona
596 – Pope Saint Gregory the Great oversees evangelization of the Anglo-Saxons, England
598 – Gregory the Great forbids mistreatment of the Jews (Letters)
614 – Persian King Chosroes steals the True Cross from Church of the Holy Sepulchre, Yerusalem
622 – Start of Islam, Mohammed claims to receive vision from the Archangel Gabriel
630 – Emperor Heraclius restores the True Cross to Jerusalem
636 – Saint Isidore of Seville dies, last of the Western Fathers
637 – Muslim conquest of Jerusalem
642 – Muslim conquest of Alexandria
680 – 681 – Third Council of Constantinople defines dogma of the Two Perfect Wills in Christ (divine and human)
680 – The Condemnation of Pope Honorius I
The Third Council of Constantinople includes Honorius (d. 638) in a list of heretics. The condemnation, sanajan, is not for the teaching of heresy, but for failing to denounce it. Ku kituna, Papal Infallibility remains intact. In a letter to the Council Pope Saint Agatho, with Honorius in mind, affirms Rome has never fallen into error. The Council agrees with the letter.
700 – Eucharistic Miracle of Lanciano
Bread and wine change visibly into flesh and blood during Mass. Later revealed in scientific tests in 1971 to be human heart tissue and blood, type AB. These elements have remained incorrupt, defying science.
711 – Muslim conquest of Spain
722 – 1492 – Christian reconquest of Spain
726 – Iconoclasm: destruction of sacred images in the East over fear of idolatry
731 – Pope Gregory III condemns Iconoclasm
731 – Saint Bede the Venerable, History of the English Church and People
749 – Saint John of Damascus dies, last of the Eastern Fathers
754 – Martyrdom of Saint Boniface, Apostle of Germany
787 – Second Council of Nicaea declares veneration of sacred images is not idolatry
795 – 1014 – Viking Period: Irish monks save Bible and other books from burning, preserving Western culture
800 – Charlemagne crowned Emperor of the Holy Roman Empire
806 – Martyrs’ Bay: Vikings sack monastery on Iona, killing sixty-eight monks
842 – Synod at Constantinople restores sacred images and declares Feast of Orthodoxy
857 – 878 – Photian Schism
Photius deposes Saint Ignatius, Patriarch of Constantinople. Pope Saint Nicholas the Great rules in favor of Ignatius. Photius condemns the Western Church.
863 – Mission of Saints Cyril and Methodius to the Slavs; invent Cyrillic alphabet
869 – Fourth Council of Constantinople condemns Photius
878 – Pope John VIII acknowledges lawful ascent of Photius after of Ignatius, ending the schism
909 – William the Pius, Duke of Aquitaine, establishes the Congregation of Cluny, center of monastic renewal
929 – Martyrdom of Saint Wenceslaus, Duke of Bohemia
957 – Baptism of Saint Princess Olga of Kiev, Russia
966 – Baptism of Duke Mieszko leads to conversion of Poland
980 – Roswitha of Gandersheim, nun and poetess, earliest known female playwright, composes numerous Christian works
988 – Baptism of Saint Prince Vladimir of Kiev, grandson of Olga, leads to conversion of Russia
993 – First Ritual Canonization; Pope John XV canonizes Saint Ulrich