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Fourth Council of the Lateran

On 15 November 1215, Pope Innocent III convened the Fourth Lateran Council which was considered to be the most important Church council of the Middle Ages. By its conclusion, it issued seventy reformatory decrees. Among other things, it encouraged creating schools and holding clergy to a higher standard than the laity. Canon 18 forbade clergymen to participate in the practice of the judicial ordeal, effectively banning its use.

In order to define fundamental doctrines, the council reviewed the nature of the Holy Eucharist, the ordered annual confession of sins, and prescribed detailed procedures for the election of bishops. The council also mandated a strict lifestyle for clergy. Canon 68 states: Jews and Muslims shall wear a special dress to enable them to be distinguished from Christians so that no Christian shall come to marry them ignorant of who they are. Canon 69 forbade "that Jews be given preferment in public office since this offers them the pretext to vent their wrath against the Christians." It assumes that Jews blaspheme Christ, and therefore, as it would be "too absurd for a blasphemer of Christ to exercise power over Christians", Jews should not be appointed to public offices.