John Chryssavgis explores the sacred dimension of the natural environment, and the significance of creation in the rich theological history and spiritual classics of the Orthodox Church, through the lens of its unique ascetical, liturgical and mystical experience. The global ecological crisis affecting humanity's air, water, and land, as well as the planet's flora and fauna, has resulted in manifest fissures on the image of God in creation. Chryssavgis examines, from an Orthodox Christian perspective, the possibility of restoring that shattered image through the sacramental lenses of cosmic transfiguration, cosmic interconnection, and cosmic reconciliation. The viewpoints of early theologians and contemporary thinkers are extensively explored from a theological and spiritual perspective, including countering those who deny that God's creation is in crisis. Presenting a worldview advanced and championed by the Orthodox Church in the modern world, this book encourages personal and societal transformation in making ethical and economic choices that respect creation as sacrament. John Chyrssavgis's capacious, reflective book is a wonderful, rigorous, and accessible meditation on ecological theology as intrinsic to Orthodox Christian thought and practice over the centuries. His theological finesse is unique and unparalleled in mediating Orthodox thought between the currents of contemporary environmentalism and theological shoals of the past. Readers of all levels will benefit from his reflections on how transfiguration, sacrament, and spirituality in Orthodox theology resist any blithe, firm distinctions between humans and nature. Eminently readable and assignable, this text is also guaranteed to become a staple in courses on Christian ecotheology.