In the warm discussions as to the duty of episcopal residence, he insisted on the imperative duty of bishops and clergy to reside in their benefices, publishing at Venice (1547) his discourse to the council, "De necessaria residentia personali", which he treated as "juris divini". He was strongly of the opinion that the duty of residence was a Divine law ("jus divinum"), and therefore could not be delegated to a vicar. On this question, Carranza wrote and issued a treatise, "Controversia de necessarii residentii personali episcoporum et aliorum inferiorum ecclesiæ pastorum Tridenti explicata". His Lenten sermon to the Council, on justification, caused much remark. He was made provincial general of his order for Castile.