#60;b#62;John Anthony McGuckin#60;/b#62; is Nielsen Professor of Early Church History at Union Theological Seminary, and Professor of Byzantine Christian Studies at Columbia University in New York. A Stavrofor priest of the Romanian Orthodox Church in America, Professor McGuckin is the author of more than twenty books on religious and historical themes, including #60;i#62;The Orthodox Church#60;/i#62; (Wiley-Blackwell, 2008), and is considered one of the leading experts of the early Christian and Eastern Orthodox tradition writing in English today.