Ronald D. Witherup, PSS, is superior general of the Sulpicians, an order of diocesan priests dedicated to initial and ongoing formation of priests. He holds a doctorate in biblical studies and is the author of numerous books and articles on Scripture, including The Word of God at Vatican II: Exploring Dei Verbum, and Biblical Fundamentalism, What Every Catholic Should Know, published by Liturgical Press. He is also a contributor to Give Us This Day.Michael G. Witczak, SLD, is a priest of the Archdiocese of Milwaukee and an assistant professor in liturgical studies at The Catholic University of America. His writings have appeared in Theological Studies, Ecclesia Orans, and Liturgical Ministry. Monsignor Kevin W. Irwin has been on the faculty of The Catholic University of America for over thirty years, where he held the Walter J. Schmitz Chair of Liturgical Studies (2000–2015), served as Dean of the School of Theology and Religious Studies (2005–2011), and is currently an Ordinary Research Professor. Msgr. Irwin has published eighteen books on liturgy and sacraments.

Ronald D. Witherup, PSS, is superior general of the Sulpicians, an order of diocesan priests dedicated to initial and ongoing formation of priests. He holds a doctorate in biblical studies and is the author of numerous books and articles on Scripture, including The Word of God at Vatican II: Exploring Dei Verbum, and Biblical Fundamentalism, What Every Catholic Should Know, published by Liturgical Press. He is also a contributor to Give Us This Day.Michael G. Witczak, SLD, is a priest of the Archdiocese of Milwaukee and an assistant professor in liturgical studies at The Catholic University of America. His writings have appeared in Theological Studies, Ecclesia Orans, and Liturgical Ministry. Monsignor Kevin W. Irwin has been on the faculty of The Catholic University of America for over thirty years, where he held the Walter J. Schmitz Chair of Liturgical Studies (2000–2015), served as Dean of the School of Theology and Religious Studies (2005–2011), and is currently an Ordinary Research Professor. Msgr. Irwin has published eighteen books on liturgy and sacraments.

Ronald D. Witherup, PSS, is superior general of the Sulpicians, an order of diocesan priests dedicated to initial and ongoing formation of priests. He holds a doctorate in biblical studies and is the author of numerous books and articles on Scripture, including The Word of God at Vatican II: Exploring Dei Verbum, and Biblical Fundamentalism, What Every Catholic Should Know, published by Liturgical Press. He is also a contributor to Give Us This Day.Michael G. Witczak, SLD, is a priest of the Archdiocese of Milwaukee and an assistant professor in liturgical studies at The Catholic University of America. His writings have appeared in Theological Studies, Ecclesia Orans, and Liturgical Ministry. Monsignor Kevin W. Irwin has been on the faculty of The Catholic University of America for over thirty years, where he held the Walter J. Schmitz Chair of Liturgical Studies (2000–2015), served as Dean of the School of Theology and Religious Studies (2005–2011), and is currently an Ordinary Research Professor. Msgr. Irwin has published eighteen books on liturgy and sacraments.