The story of the Risen Jesus

"appearing to the two disciples on the road to Emmaus helps us to focus on a primary aspect of the Eucharistic mystery, one which should always be present in the devotion of the People of God: The Eucharist is a mystery of light! What does this mean, and what are its implications for Christian life and spirituality?

"Jesus described himself as the 'light of the world' (Jn 8:12), and this quality clearly appears at those moments in his life, like the Transfiguration and the Resurrection, in which his divine glory shines forth brightly. Yet in the Eucharist the glory of Christ remains veiled. The Eucharist is pre-eminently a mysterium fidei. Through the mystery of his complete hiddenness, Christ becomes a mystery of light, thanks to which believers are led into the depths of the divine life.

"By a happy intuition, Rublëv's celebrated icon of the Trinity clearly places the Eucharist at the centre of the life of the Trinity."
John Paul II, Apostolic Letter Mane nobiscum Domine, 11