Catholic ecumenical councils
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According to the Catholic Church, a Church Council is ecumenical if it is "a solemn congregation of the Catholic bishops of the world at the invitation of the Pope to decide on matters of the Church w
A session of the Council of Trent, from an engraving
Early manuscript illustration of I Constantinople Homilies of Gregory Nazianzus, Bibliothèque nationale de France (879-882)
Pope Innocent II
Bishops debating with the pope at the Council of Constance
Nicene Creed
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The Nicene Creed is the defining statement of belief of Nicene Christianity and in those Christian denominations that adhere to it.
Catholic ecumenical councils
…but also by the Eastern Orthodox Church and many Protestant denominations. The First Council of Nicaea (20 May – 25 July? 325) formulated the original Nicene Creed. Most importantly, the council defined the equality of God the Father and Christ, his son. It taught that Jesus was of the same substance as God the…
Icon depicting Constantine the Great, accompanied by the bishops of the First Council of Nicaea (325), holding the Niceno-Constantinopolitan Creed of 381. First line of main text in Greek: Πιστεύω εἰς ἕνα Θ[εό]ν, πατέρα παντοκράτορα, ποιητὴν οὐρανοῦ κ[αὶ] γῆς. Translation: "I believe in one God, the Father, the Almighty, Maker of heaven and earth."
The oldest extant manuscript of the Nicene Creed, dated to the 6th century
17th-century Russian icon illustrating the articles of the creed