The Concept of "Sister Churches" in Catholic-Orthodox Relations since Vatican II

The concept of "sister churches" highlights the evolving relationship between Catholic and Orthodox traditions, emphasizing mutual respect and local ecclesiology. Dr. Will Cohen examines its historical development and the debates surrounding it, particularly in light of Pope John Paul II's encyclical Ut Unum Sint. He argues that this doctrine can guide both traditions toward unity while maintaining their distinct identities. The book sheds light on how each ecclesiology can benefit from the other, fostering a renewed balance in their respective practices and beliefs.