 Eventually, Calvin lost patience and refused to respond; by this time Servetus had written around thirty letters to Calvin.Calvin was particularly outraged when Servetus sent him a copy of the "Institutes of the Christian Religion" heavily annotated with arguments pointing to errors in the book.When Servetus mentioned that he would come to Geneva, "Espeville" (Calvin) wrote a letter to Farel on 13 February 1546 noting that if Servetus were to come, he would not assure him safe conduct