Robert Barron (STD, Institut Catholique de Paris) is auxiliary bishop of the Archdiocese of Los Angeles. He founded Word on Fire, a Catholic ministry of evangelism, and previously served as rector of Mundelein Seminary and president of the University of St. Mary of the Lake. Barron has written numerous books, includingCatholicism (over 100,000 copies sold) and 2 Samuel in the Brazos Theological Commentary on the Bible.