Fr. Donald Senior is one of Catholicism's leading New Testament scholars. The author and editor of numerous works, he is President Emeritus of the Catholic Theological Union in Chicago, where he is also a professor of the New Testament. A Roman Catholic priest of the Passionist order, he has served on the Pontifical Biblical Commission since Pope John Paul II named him to it in 2001 and has taught and led study tours in the Holy Land for over 25 years.