Original sentence: Since the Third Ecumenical Council had prohibited the promulgation of any other creed, the addition is considered by many to have been a violation of the canons of that Council.The Roman Catholic church added the words "and the Son" (the filioque clause) to the description of the Holy Spirit, in what many have argued is a violation of the Canons of the Third Ecumenical Council.The phrase "and the son" (filioque in Latin) was first used in Toledo, Spain in 587 without the consultation or agreement of the other four patriarchs of the Church at that time.Those words were not included by the Council of Nicaea nor of Constantinople, and most Eastern Orthodox theologians consider their inclusion to be a heresy
Edited sentence: The Roman Catholic church added the words "and the Son" (the filioque clause) to the description of the Holy Spirit, in violation of the Canons of the Third Ecumenical Council.The phrase "and the son" (filioque in Latin) was first used in Toledo, Spain in 587 without the consultation or agreement of the other four patriarchs of the Church at that time and in direct violation of canons of the Third Ecumenical Council that prohibited unilateral alteration of the Creed by anything short of another Ecumenical Council.Those words were not included by the Council of Nicaea nor of Constantinople, and the Eastern Orthodox churches consider their inclusion to be a heresy