1. The mass and all church services to be held in the Polish language; 2. Communion in both kinds; 3. A married clergy; and 4. The calling of a National Synod to settle the existing religious differences and troubles. The Pope was astonished at the request, and refused to sanction the suggested reforms absolutely. To the fourth point he acceded, but never really intended to keep his promise.[147] The nature of the proceedings and the decisions of the Diet of 1555 and the proposed religious reforms for which the Polish king asked papal sanction caused the Apostolic See a good deal of concern, and led the Vatican to send at once Louis Alois Lippomano, bishop of Verona, as special legate to Poland. From this time on the Apostolic See kept a special envoy in Poland constantly to watch the course of events. Lippomano was a man without tact, and not at all particular in his choice of means to accomplish his objects. His reputation had preceded him, and his arrival in Poland in October, 1555, stirred up the Protestant element in the population to great indignation. The king received him cordially. But owing to his lack of tact, Lippomano soon lost the king’s favor, and won the ill-will even of good Catholics.[148] To mend matters, the legate started to exert his influence first on those nearest to the king. He wrote a letter to Nicholas Radziwill the Black, palatine, chancellor, and grand marshal of Lithuania, the most powerful magnate in the Grand Duchy, an ardent Calvinist, whose zeal contributed greatly to the spread of Protestantism in Poland as well as in the Grand Duchy. In this letter Lippomano endeavored to win and convert Radziwill to the Church of Rome. Radziwill, however, could not be won back to the Roman Church. He replied, exposing the unfavorable character of the Catholic clergy, and let this correspondence be published. The publication of this correspondence made Lippomano still more unpopular in Poland, and changed completely whatever friendly attitude the king may have had toward him.[149]