This book argues that the cause of liturgical pluralism and disunity on the one hand and the path to unity in liturgy on the other is based on the choice taken between two conflicting interpretations of the divine presence.The transubstantiation hypothesis championed by the Sacramental model, tacitly accepted by the Kerygmatic model, and strongly encouraged by the Charismatic model has produced conflicting liturgical practices resulting in disunity.The Biblical Sanctuary model applies a phenomenological exegesis to selected Old and New Testament passages showing that the Biblical view of the divine presence temporally grounds the relationship between all of the components of liturgy and by doing so points to a unified liturgy.