Father Eusebius Martis, OSB, is a monk of Marmion Abbey, a sacramental theologian, and international lecturer. He teaches at the Ateneo Sant’Anselmo and the Pontificio Instituto Liturgico, Rome. He is former director of Sacred Liturgy and Associate Professor of Sacraments and Liturgy at the Pontifical College Josephinum in Columbus, Ohio. He was Director of the Liturgical Institute at the University of Saint Mary of the Lake (2004-2015) and Associate Professor of Sacramental Theology in the Department of Dogmatic Theology as well as Chair of the Department of Liturgy and Music at the University of Saint Mary of the Lake/Mundelein Seminary (2002-2015).