The Sacrament of Communion is a Holy Sacrament by which the believer eats the Holy Body and Precious Blood of Jesus Christ, presented by the Bread and Wine. This Sacrament has the greatest importance among the Seven Church Sacraments. It is sometimes called the ‘Mystery of Mysteries’ or the ‘Crown of Sacraments’; for all the Sacraments are crowned by the Eucharist :
The person baptized must receive Communion directly after Baptism.
The repentant person must receive Communion after having confessed.
The person who marries must receive Communion after the wedding, (which must take place between the Matins and Holy Mass), according to the original Rite of Matrimony. Also, whoever is ordained with any priestly rank must receive Communion following the Holy Mass of his ordination.
Its Institution
The Lord Jesus instituted the holy Eucharist on Covenant Thursday, in the Upper Room of Zion, shortly before His arrest and trial. After He celebrated the Rite of Passover of the Jews, He rose and washed the feet of His disciples, as a sign of repentance and preparation, then sat down and instituted the Passover of the New Covenant, which is the Sacrament of Holy Communion. “He took bread, blessed it and broke it, and gave it to the disciples and said, ‘Take, eat, this is My Body’, then He took the cup and gave thanks, and gave it to His disciples saying, ‘Drink from it, all of you, for this is My Blood of the New Covenant, which is shed for many for the remission of sins’” (Matthew 26:26-28), and our teacher St Paul repeats the same words in 1 Corinthians (11:23-25).