On 24 May, Luther sent an explanation of his theses to the pope; on 7 August he was summoned to appear at Rome. An arrangement was effected, however, whereby that summons was cancelled, and Luther went instead to Augsburg in October 1518 to meet the papal legate, Cardinal Cajetan; but neither the arguments of the cardinal, nor Leo's dogmatic papal bull of 9 November requiring all Christians to believe in the pope's power to grant indulgences, moved Luther to retract. A year of fruitless negotiations followed, during which the controversy took popular root across the German states. A further papal bull of 15 June 1520, Exsurge Domine or Arise, O Lord, condemned forty-one propositions extracted from Luther's teachings, and was taken to Germany by Eck in his capacity as apostolic nuncio. Leo followed by formally excommunicating Luther by the bull Decet Romanum Pontificem or It Pleases the Roman Pontiff, on 3 January 1521. In a brief the Pope also directed Charles V, Holy Roman Emperor to take energetic measures against heresy. It was also under Leo that Lutheranism spread into Scandinavia. The pope had repeatedly used the rich northern benefices to reward members of the Roman curia, and towards the close of the year 1516 he sent the impolitic Arcimboldi as papal nuncio to Denmark to collect money for St Peter's. This led to the Reformation in Denmark. King Christian II took advantage of the growing dissatisfaction of the native clergy toward the papal government, and of Arcimboldi's interference in the Swedish revolt, to expel the nuncio and summon Lutheran theologians to Copenhagen in 1520. Christian approved a plan by which a formal state church should be established in Denmark, all appeals to Rome should be abolished, and the king and diet should have final jurisdiction in ecclesiastical causes. Leo sent a new nuncio to Copenhagen (1521) in the person of the Minorite Francesco de Potentia, who readily absolved the king and received the bishopric of Skara. The pope or his legate, however, took no steps to correct abuses or otherwise discipline the Scandinavian churches. Other activities Consistories The pope created 42 new cardinals in eight consistories including two cousins (one who would become his successor Pope Clement VII) and a nephew. He also elevated Adriaan Florensz Boeyens into the cardinalate who would become his immediate successor Pope Adrian VI. Leo X's consistory of 1 July 1517 saw 31 cardinals