THE FOURTH LATERAN COUNCIL 1215:
“Although we would wish to cherish and honour the Greeks who in
our days are returning to the obedience of the apostolic see, by preserving their customs and rites as much as we can in the Lord, nevertheless we neither want nor ought to defer to them in matters which bring danger to souls and detract from the church’s honour. For, after the Greek church together with certain associates and supporters withdrew from the obedience of the apostolic see, the Greeks began to detest the Latins so much that, among other wicked things which they committed out of contempt for them, when Latin priests celebrated on their altars they would not offer sacrifice on them until they had washed them, as if the altars had been defiled thereby. The Greeks even had the temerity to rebaptize those baptized by the Latins; and some, as we are told, still do not fear to do this. Wishing therefore to remove such a great scandal from God’s church, we strictly order, on the advice of this sacred council, that henceforth they do not presume to do such things but rather conform themselves like obedient sons to the holy Roman church, their mother, so that there may be one flock and one shepherd. If anyone however does dare to do such a thing, let him be struck with the sword of excommunication and be deprived of every ecclesiastical office and benefice.”