Priest Anthony Roeber, Ph.D., professor of Church History at St. Vladimir’s Orthodox Theological Seminary, presented four Lenten talks to the entire seminary community on February 19–20, 2018, as they gathered in Three Hierarchs Chapel for worship and reflection to mark the beginning of the season of Great Lent. Father Anthony based his talks on the “Great Farewell Discourse” of our Lord Jesus Christ, as recorded in the Gospel of St. John (John 14–17). Focusing on the words, “That they may be one, as we are one” (John 17.21), he challenged Orthodox Christians to love, trust, and seek unity with others—whether they are inside or outside the borders of the faith.