The Decree of the Holy, Great, 7th Ecumenical Synod, the Second of Nicaea

The holy, great, and Ecumenical Synod which by the grace of God and the will of the pious and Christ-loving Emperors, Constantine and Irene, his mother, was gathered together for the second time at Nice, the illustrious metropolis of Bithynia, in the holy church of God which is named Sophia, having followed the tradition of the Catholic Church, hath defined as follows:

Christ our Lord, who hath bestowed upon us the light of the knowledge of himself, and hath redeemed us from the darkness of idolatrous madness, having espoused to himself the Holy Catholic Church without spot or defect, promised that he would so preserve her: and gave his word to this effect to his holy disciples when he said: “Lo! I am with you always, even unto the end of the world,” which promise he made, not only to them, but to us also who should believe in his name through their word. But some, not considering of this gift, and having become fickle through the temptation of the wily enemy, have fallen from the right faith; for, withdrawing from the traditions of the Catholic Church, they have erred from the truth and as the proverb saith: “The husbandmen have gone astray in their own husbandry and have gathered in their hands nothingness,” because certain priests, priests in name only, not in fact, had dared to speak against the God-approved ornament of the sacred monuments, of whom God cries aloud through the prophet, “Many pastors have corrupted my vineyard, they have polluted my portion.”