In religious matters, Zeno is famous for his "Henotikon", or "Act of Union", issued in 482 to mediate between Chalcedonian and Miaphysite views about the nature of Christ. The Chalcedonians recognised two natures ("physis") in Christ, the Miaphysites only one; the Council of Chalcedon (451) had issued the Chalcedonian Creed and condemned the Miaphysite position, but the Miaphysites were still strong, especially in the Eastern provinces of the Empire, and the Patriarch of Alexandria, Peter Mongus, was a Miaphysite. Supporting the Miaphysites was one of the mistakes made by Basiliscus, as the people of Constantinople were Chalcedonian, but Zeno needed the support of the Miaphysite provinces—Egypt, Syria, Palestine and Asia Minor; also, the Patriarch of Constantinople, Acacius, was interested in reducing the distance between the two positions.