53 "You, therefore, beloved of God and honored by apostolic approval—for it is to you that the teacher of the Gentiles, the blessed Apostle Paul, says: 'Your faith is spoken of in the whole world' ( Rom . 1:8)—preserve in yourselves that which you know to have been the cause of this great preacher's good opinion of you. Let not a man of you make himself undeserving of this praise, or allow so much as a taint of Eutyches' impious doctrine to infect a people that has remained for so long untouched by heresy, taught by the Holy Spirit." (47)
Source: Aeterna Dei Sapientia (Vatican.va)