the monasteries of nuns without a good reason; declared that married clergy should lose their benefices; and decreed that priests who engaged in "that unnatural vice for which the wrath of God came down upon the sons of disobedience and destroyed the five cities with fire" (sodomy) should be deposed from clerical office and required to do penance - while laymen should be excommunicated. Canon 18 required every cathedral church to appoint a master to teach the clerics and the poor scholars of the church; this action helped launch the cathedral schools that later became universities. It also regulated the license to teach (licentia docendi), stating "let no one demand any money for a licence to teach, or under cover of some custom seek anything from teachers, or forbid anyone to teach who is suitable and has sought a licence." Selling the license to teach could prevent the progress of churches. Canon 19 declared excommunication for those who tried to tax churches and clergy without the consent of the bishop. Canon 23 concerns the proper organisation of accommodation for lepers. Canon 25 excommunicated those who engage in usury. Canon 26 forbade Jews and Muslims from having Christian servants and states that the evidence of Christians is always to be accepted against Jews. Canon 27 stressed the duty of princes to repress heresy and condemned "the Brabantians, Aragonese, Basques, Navarrese, and others who practice such cruelty toward Christians that they respect neither churches nor monasteries, spare neither widows nor orphans, neither age nor sex, but after the manner of pagans, destroy and lay waste everything" (De Brabantionibus et Aragonensibus, Navariis, Bascolis, Coterellis et Triaverdinis, qui tantam in Christianos immanitatem exercent, ut nec ecclesiis, nec monasteriis deferant, non viduis, et pupillis, non senibus, et pueris, nec cuilibet parcant aetati, aut sexui, sed more paganorum omnia perdant, et vastent). Among the many attendees at the Council was William of Tyre, the famous historian and, at the time, archbishop of Tyre. William was sent by Baldwin IV as the representative of the Kingdom of Jerusalem, and wrote about the journey to the Council in his history. The Kingdom of Hungary was represented by Andrew, Archbishop of Kalocsa. Archbishop-elect Berthold of Bremen attended, expecting to have his election confirmed although he had not taken major orders. His presence was resented by the other archbishops and the lobbying of Duke Henry the Lion of Saxony succeeded