One of the evangelist’s many themes in this gospel relates to the Eucharist as the Bread of Life. Contemplating this theme pulls me back to the genesis of this blog: the concept of wandering through the wilderness.
God rained down manna in the wilderness to sustain Moses and his people. The Eucharist is our manna, to nourish and sustain us as we wander through our 21st century wilderness. Jesus is our bread from heaven, the bread-wisdom giving life to those who believe in him. Not life on this earth but eternal life with God.
In the Eucharist, we become one with God. He is in us and we are in Him. What we consume is the Spirit-filled flesh and blood of the Son of Man. It sustains us until the raising up of the last day.
Perhaps the greatest Johannine theme: Jesus is the Word of God sent by God. The pre-existent word of God incarnate. Jesus is the way to the Father. Sent by God, Jesus finishes the work God gave him to do and then goes back to God.
The evangelist is also found of dualities: Light and darkness, truth and falsehood, life and death, above and below, sight and blindness.