 Complete the following phrase:  In March 1536, Calvin published the first edition of his Institutio Christianae Religionis or Institutes of the Christian Religion. The work was an apologia or defense of his faith and a statement of the doctrinal position of the reformers. He also intended it to serve as an elementary instruction book for anyone interested in the Christian faith. The book was the first expression of his theology. Calvin updated the work and published new editions throughout his life. Shortly after its publication, he left Basel for Ferrara, Italy, where he briefly served as secretary to Princess Renée of France. By June he was back in Paris with his brother Antoine, who was resolving their fathers affairs. Following the Edict of Coucy, which gave a limited six-month period for heretics to reconcile with the Catholic faith, Calvin decided that there was no future for him in France. In August he set off for Strasbourg, a free imperial city of the Holy Roman Empire and a refuge for reformers. Due to 