Catherine E. Clifford is professor of systematic and historical theology at Saint Paul University, Ottawa, Canada. She is presently vice president of the Catholic Theological Society of America and serves as a North American delegate to the XVI General Assembly of the Synod on Synodality. Among her recent publications are The Oxford Handbook on Vatican II (2023), co-edited with Massimo Faggioli, and Vatican II at 60: Re-Energizing the Renewal (Orbis, 2024).
 
Kristin M. Colberg is associate professor of theology at Saint John's University and School of Theology and the College of Saint Benedict, and the sole U.S. member to serve on the theological commission for the Synod on Synodality. She received her doctorate at the University of Notre Dame in systematic theology. She is the co-author with Jos Moons, SJ, of The Future of Synodality: How We Move Forward from Here (Liturgical Press, 2025), author of Vatican I and Vatican II: Councils in the Living Tradition (Liturgical Press, 2016), and the co-editor of Speaking Truth in Love, a festschrift in honor of Cardinal Walter Kasper (Liturgical Press, 2014). Colberg also serves as a member of the Anglican-Roman Catholic International Commission (ARCIC).
 
Massimo Faggioli is professor of historical and contemporary ecclesiology at the Loyola Institute at Trinity College Dublin and the School of Religion, Theology, and Peace Studies, and a contributing editor for Commonweal. He is an internationally-established scholar in the area of Vatican II and the papacy especially, and a renowned public commentator on church affairs. Among his books with Liturgical Press are The Legacy and Limits of Vatican II in an Age of Crisis (2025); True Reform: Liturgy and Ecclesiology in Sacrosanctum Concilium (2012); Pope John XXIII: The Medicine of Mercy (2014); and Sorting Out Catholicism: A Brief History of the New Ecclesial Movements (2014).
 
Edward P. Hahnenberg is the Breen Chair in Catholic Theology at John Carroll University. He is the author or co-editor of seven books—including Theodore Hesburgh, CSC: Bridge Builder (2020); Theology for Ministry: An Introduction for Lay Ministers (2014) published by Liturgical Press. He is a past delegate to the U.S. Lutheran-Catholic Dialogue and former theological consultant to the U.S. Bishops’ Subcommittee on Lay Ministry.