Although Roman Catholic canonists admit that theological errors, and in the case of Theodore very serious ones, can be found in the writings, the mistakes of Theodoret and Ibas were chiefly but not wholly due to a misunderstanding of the language of Cyril of Alexandria. However these errors do not make the decision of condemnation easy, for there were no good precedents for dealing harshly with the memory of men who had died in peace with the Church. Facundus, Bishop of Hermiane, pointed out in his "Defensio trium capitulorum" that Saint Cyprian had erred about the rebaptism of heretics, yet no one would dream of anathematizing him. The condemnation of the "Three Chapters" was demanded primarily to appease opponents of the Council of Chalcedon. Both Ibas and Theodoret had been deprived of their bishoprics by condemned heretics, and both were restored by the Council of Chalcedon upon anathematizing Nestorius.