This article begins by unfolding Thomas Berry’s notion of Pax Gaia, using the concept as a key to unlock cogent aspects of his geobiological thought. Then, suggesting an addition to John Howard Yoder’s typologies, the authors argue that Berry’s vision of the peace of the Earth can be categorized as a ” the pacifism of religious cosmology.” Berry’s cosmology of peace is then grounded with reference to concrete issues of ecojustice, with a particular focus on the interrelated concepts of “biocide” and “geocide.” The article ends by highlighting the need for reinvention of the human, which emerges from the moral imperatives associated with the pacifism of religious cosmology.