Examines themes associated with episcopal unity. By surveying the Christian tradition, beginning with the scriptures and then through various periods (Apostolic generation, patristic, scholastic, Vatican II, recent post Vatican II developments such as synodality) a coherent picture of episcopal togetherness is presented. What does episcopal fraternity and communio look like? This central question is explored through the erudition and experience of Archbishop Anthony Fisher, Catholic Archbishop of Sydney, Australia. Unity in Christ, based upon a series of addresses given to the United States Conference of Catholic Bishops (USCCB) at their Special Assembly in 2022, delves into the themes associated with episcopal unity. By surveying the Christian tradition, beginning with the scriptures and then through various periods (Apostolic generation, patristic, scholastic, Vatican II, recent post Vatican II developments such as synodality) a coherent picture of episcopal togetherness is presented. What becomes clear is that unity among Christ's disciples and their successors is not simply an ideal but rather a constitutive element of their office. They are called to love as Christ loved, expressed above all through genuine friendship with one another. The consequences of this fraternity and communio have implications in areas such as spirituality, preaching and fraternal correction, among others. This second feature, the implications of episcopal fraternity and communio, are explored through Archbishop Fisher's twenty years of experience as a bishop of the Catholic Church. By providing concrete examples of lived episcopal fraternity and communio, Fisher offers a glimpse into both the challenges and fruits of living out Christ's call that ""they might all be one"" (Jn 17:21).