Dr. Peter S. Williamson occupies the Adam Cardinal Maida Chair in Sacred Scripture at Sacred Heart Major Seminary in Detroit, Michigan. He received his M.A. in Theology from Sacred Heart in 1995 and his S.T.D. in Biblical Theology from the Gregorian University in 2001. Dr. Williamson, a convert to the Catholic Church in 1972, is a married layman who has been involved for over forty years in evangelization and pastoral ministry in the United States and abroad.

He is co-author (with Cardinal Albert Vanhoye) of Galatians (2017), Revelation (2015), and Ephesians (2009) in the Catholic Commentary on Sacred Scripture and coeditor of the series along with Dr. Mary Healy and Kevin Perrotta. He is also author of Catholic Principles for Interpreting Scripture: A Study of the Pontifical Biblical Commission's "The Interpretation of the Bible in the Church" (Loyola Press, 2002) and coeditor with Ralph Martin of John Paul II and the New Evangelization (revised edition, St. Anthony Messenger, 2006).

Dr. Williamson is co-founder and chair of the Catholic Biblical School MInistry and co-founder and chair of the Barnabas Almsgiving Fund.

He lives in Ypsilanti, Michigan with his wife Zohra, through whom he is blessed with three adult children and four grandchildren.