Francesco Scarsella is an Italian Doctor in Patristic Theology and Sciences at the Pontificial Institutum Patristicum Augustinianum in Rome. He has also been invited as a relator in conferences on Patristic Theology, the media, and the Ministry of Exorcism, held in Italy, the Philippines, and Japan. The work here presented is intended to give, through the Works of one of the greatest Saints the Church ever had, an insight on a topic too often forgotten but so essential for Christian life.