According to the Orthodox doctrine, the sacrament of communion consists in eating by believers under the guise of bread and wine of the real essence of the Body and Blood of the Lord Jesus Christ. The sacrament of communion is one of the seven Orthodox sacraments in which a person is united with God.
The establishment of the sacrament of communion does not apply to human ordinance or the invention of the clergy. If we turn to the gospel narrative, it will be clear that the sacrament of the Eucharist (communion) was established by the Lord Jesus Christ Himself.
The sacrament of the sacrament was established by the Savior shortly before the death of the cross - on Thursday. Until now, this day is called "Maundy Thursday" as a sign that this is a special time for the purification of the human soul and the union of the latter with God. As the Gospels narrate, during the sacramental supper in the upper room of Zion, Christ took bread, broke it and distributed it to his disciples to the apostles with the words that this is the true Body of the Son of God. Further, the Savior blessed the cup of wine, saying that it was His Blood. The Lord Himself commanded to perform this sacrament in remembrance of Him.
The sacrament of the sacrament took place already in the first centuries of Christianity. So from the history of the Church it is known that believers gathered in secret from the pagan authorities, performed divine services and took communion of the Body and Blood of Christ, fulfilling the covenant of the Savior.
The need for the sacrament of the sacrament is also stipulated in the Gospel. Christ Himself said that communion is necessary in order to have life in oneself. The Gospel speaks of union with God in the sacrament of the sacrament. Christ preached the gospel that those people who receive communion abide in Him (the Lord Jesus Christ) and the Lord Himself abides in them.