What is particularly characteristic of this attitude toward the faith is the absence of any great concern for establishing external criteria of truth—a concern that has dominated Western Christian thought since the Middle Ages. Truth appears as a living experience accessible in the communion of the church and of which the Scriptures, the councils, and theology are the normal expressions. Even ecumenical councils, in the Orthodox perspective, must be accepted by the body of the church in order to be recognized as truly ecumenical. Ultimately, therefore, truth is viewed as its own criterion: there are signs that point to it, but none of those signs is a substitute for a free and personal experience of truth, which is made accessible in the sacramental fellowship of the church.
Because of this view of truth, the Orthodox have traditionally been reluctant to involve church authority in defining matters of faith with too much precision and detail. This reluctance is not due to relativism or indifference but rather to the belief that truth needs no definition to be the object of experience and that legitimate definition, when it occurs, should aim mainly at excluding error and not at pretending to reveal the truth itself that is believed to be ever present in the church. God and humankind
The development of the doctrines concerning the Trinity and the Incarnation, as it took place during the first eight centuries of Christian history, was related to the concept of humankind’s participation in divine life.
The Eastern (Greek) Fathers always implied that the phrase found in the biblical story of the creation of man (Genesis 1:26), according to “the image and likeness of God,” meant that humans are not autonomous beings and that their ultimate nature is defined by their relation to God. In paradise Adam and Eve were called to participate in God’s life and to find in him the natural growth of their humanity “from glory to glory.” To be “in God” is, therefore, the natural state of humankind. This doctrine is particularly important in connection with the Fathers’ view of human freedom. For theologians such as Gregory of Nyssa" class="md-crosslink">St. Gregory of Nyssa (4th century) and St. Maximus the Confessor (7th century), humans are truly free only when they are in communion with God. Otherwise they are only slaves to their body or to “the world,” over which, originally and by God’s command, he was destined to rule. Thus, the concept of sin implies separation from God and the reduction of humans to a separate and autonomous existence, in which they are deprived of both God’s natural glory and freedom.
Freedom in God, as enjoyed by Adam, implied the possibility of falling away from God. This is the unfortunate choice made by Adam and Eve, which led them to a subhuman and unnatural existence. The most unnatural aspect of this new state was death. In this perspective, “original sin” is understood not so much as a state of guilt inherited from Adam and Eve but as an unnatural condition of human life that ends in death. Mortality is what each person now inherits at birth and what leads an individual to struggle for existence, to self-affirmation at the expense of others, and ultimately to subjection to the laws of animal life. The “prince of this world” (i.e., Satan), who is also the “murderer from the beginning,” has dominion over humanity. From this vicious circle of death and sin, humans are understood to be liberated by the death and Resurrection of Jesus, which are actualized in baptism and the sacramental life in the church.
The general framework of this understanding of the relationship between God and humankind is clearly different from the view that became dominant in the Christian West—i.e., the view that conceived of “nature” as distinct from “grace” and that understood original sin as an inherited guilt rather than as a deprivation of freedom. In the East humans are regarded as complete when they participate in God; in the West humans are believed to be autonomous, sin is viewed as a punishable crime, and grace is understood as the granting of forgiveness. Hence, in the West the aim of the Christian is justification, but in the East it is rather communion with God and deification (theosis). In the West the church is viewed in terms of mediation (for the bestowing of grace) and authority (for guaranteeing security in doctrine); in the East the church is regarded as a communion in which God and the individual meet once again and a personal experience of divine life becomes possible. Christ
The Eastern Orthodox Church is formally committed to the Christology (doctrine of Christ) that was defined by the councils of the first eight centuries. Together with the Latin church of the West, it rejected Arianism (a belief in the subordination of the Son to the Father) at Nicaea (325), Nestorianism (a belief that stresses the independence of the divine and human natures of Christ) at Ephesus (431), and monophysitism (a belief that Christ has only one, divine nature) at Chalcedon (451). The Eastern and Western churches still formally share the tradition of subsequent Christological developments, even though the famous formula of Chalcedon, “one person in two natures,” is given different emphases in the East and the West. The stress on Christ’s identity with the preexistent Son of God, the Logos (Word) of the Gospel According to John, characterizes Orthodox Christology. On Byzantine icons, often depicted around the face of Jesus are the Greek letters ο’ω’ν—the equivalent of the Jewish tetragrammaton YHWH, the name of God in the Old Testament (Hebrew Bible). Jesus is thus always seen in his divine identity. Similarly, the liturgy consistently addresses the Virgin Mary as Theotokos (the “one who gave birth to God”), and this term, formally admitted as a criterion of orthodoxy at Ephesus, is actually the only Mariological (doctrine of Mary) dogma accepted in the Orthodox church. It reflects the doctrine of Christ’s unique divine person. Mary is venerated solely because she is his mother “according to the flesh.”
Jesus Christ, mosaic; in the cathedral in Cefalù, Sicily, Italy.© Fernando Fernández Baliña/Getty Images
This emphasis on the personal divine identity of Christ, based on the doctrine of Cyril of Alexandria" class="md-crosslink">St. Cyril of Alexandria (5th century), does not imply the denial of his humanity. The anthropology (doctrine of humankind) of the Eastern Fathers does not view the individual as an autonomous being but rather implies that communion with God makes the individual fully human. Thus, the human nature of Jesus Christ, fully assumed by the divine Word, is indeed the “new Adam” in whom the whole of humanity receives again its original glory. Christ’s humanity is fully that of every human being; it possesses all the characteristics of the human being—“each nature (of Christ) acts according to its properties,” Chalcedon proclaimed, following Pope Leo I—without separating itself from the divine Word. Thus, in death itself—for Jesus’ death was indeed a fully human death—the Son of God was the “subject” of the Passion. The theopaschite formula (“God suffered in the flesh”) became, together with the Theotokos formula, a standard of orthodoxy in the Eastern church, especially after the second Council of Constantinople (553). It implies that Christ’s humanity is indeed real not only in itself but also for God, since it brought him to death on the cross, and that the salvation and redemption of humanity can be accomplished by God alone—hence the necessity for him to condescend to death, which holds humanity captive.