This part is particularly fine:
“St John’s faith in the mystery of the love that binds believers to Christ and to one another led him to express a profound reverence for the Eucharist, a reverence that he fostered in the celebration of the Divine Liturgy, as is demonstrated by the fact that one of the richest expressions of eastern liturgy bears his name to this day. St John understood that the Divine Liturgy situated the believer spiritually between his life on earth and the heavenly reality which was promised to him by the Lord. He expressed his awe at celebrating these sacred mysteries to St Basil the Great in these words: “For when you see the Lord sacrificed, and laid upon the altar, and the priest standing and praying over the victim, ... can you then think that you are still among men, standing upon the earth? Are you not, on the contrary, straightway transported to heaven ...?” These sacred rites, says St John, “are not only marvelous to behold, but transcendent in awe. There stands the priest ... bringing down the Holy Spirit, and he prays at length ... that grace descending on the sacrifice may thereby enlighten the minds of all and render them more resplendent than silver purified by fire. Who can despise this most awesome mystery?i St John urged this same sense of reverence before the eucharistic mystery on those who heard his preaching: “Reverence now this table from which we all are partakers, Christ, who was slain for us, the victim that is placed thereon.”ii John spoke movingly of the sacramental effects of Holy Communion upon believers. “Christ’s blood causes the image of our King to be fresh within us, produces unspeakable beauty, and does not permit the nobleness of our souls to waste away, but waters it continually, and nourishes it.”iii For this reason, St John, echoing the Holy Scriptures, insistently and frequently exhorted the faithful to approach the altar of the Lord worthily, “not lightly and ... out of custom and form,” but with “sincerity and purity of soul”.iv He insisted that interior preparation for Holy Communion should include repentance for one’s sins and gratitude for Christ’s sacrifice on behalf of our salvation. He thus urged the lay faithful to participate fully and devoutly in the rites of the Divine Liturgy and, with this same disposition, to receive Holy Communion. “Let us not, I beg you, slay ourselves by our irreverence, but with awe and purity draw near to it; and when you see it set before you, say to yourself: «Because of this Body am I no longer earth and ashes, no longer a prisoner, but free: because of this I hope for heaven, and to receive the good things therein, immortal life, the portion of angels, to converse with Christ».”v
St John reminded his hearers that their communion with the body and blood of Christ obliges them to provide material assistance for the poor and hungry in their midst.i The Lord’s table is the place where believers recognize the poor and needy, whom they may not have previously known.ii St John urged the faithful to look beyond the altar on which the eucharistic sacrifice was offered and to see in it Christ in the person of the poor. By helping the poor they make a sacrifice on the altar of Christ that is acceptable to God”
I recommend clicking Pyro’s link and reading the whole letter!
In the Byzantine (Ukranian/Ruthenian) rites of the Catholic Church, we chant the Divine Liturgy of St. John Chrysostom every Sunday. "Divine" doesn't begin to describe it. Even in the mouths of unprofessional, people-in-the-pew singers, the beauty and majesty of those magnificent words and phrases overcomes one. Every week, imagine!