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320 CE
330 CE
340 CE
350 CE
360 CE
370 CE
380 CE
390 CE
400 CE
410 CE
420 CE
430 CE
440 CE
450 CE
325 CE: Roman Emperor Constantine I calls the Council of Nicaea.
381 CE: The First Council of Constantinople adds to Nicene Creed.
431 CE: First Council of Ephesus.
439 CE: Second Council of Ephesus.
451 CE: Fourth Ecumenical Council takes place in Chalcedon, determining that Jesus Christ had two distinct natures and wills, perfectly united.