"Tewahedo" (Ge'ez: ተዋሕዶ) is a Ge'ez word meaning "united as one". This word refers to the Oriental Orthodox belief in the one perfectly unified nature of Christ; i.e., a complete union of the divine and human natures into one nature is self-evident in order to accomplish the divine salvation of humankind, as opposed to the "two natures of Christ" belief commonly held by the Roman Catholic and Eastern Orthodox, Anglican, Lutheran and most Protestant churches. The Oriental Orthodox Churches adhere to a miaphysitic Christological view followed by Cyril of Alexandria, the leading protagonist in the Christological debates of the 4th and 5th centuries, who advocated ""mia physis tou theou logou sesarkōmenē"", or "one (mia) nature of the Word of God incarnate" ("μία φύσις τοῦ θεοῦ λόγου σεσαρκωμένη") and a hypostatic union ("ἕνωσις καθ' ὑπόστασιν henōsis kath hypostasin"). The distinction of this stance was that the incarnate Christ has one nature, but that one nature is of the two natures, divine and human, and retains all the characteristics of both after the union.