Nothing in John’s gospel should be read in isolation from the whole. Our passage forms part of Jesus’ dialogue with a Pharisee called Nicodemus who recognises that Jesus is ‘of God’. Jesus leads Nicodemus to new understandings about relationship with God. The need to be ‘born of the Spirit’ is part of that conversation.
Trinitarian language pervades John’s gospel and is present elsewhere in the Christian scriptures, almost certainly reflecting the incipient belief of the earliest communities in a God who is one but also three-in-one. This belief was to develop over the subsequent centuries into the doctrine of the Trinity which is at the very heart of Christian faith.
Perichoresis , a Greek term suggestive of dancing or of figures interweaving, is one of the earliest and probably one of the most striking images used to explain the Trinity. The life that is in God is three and yet one in a totally harmonious dance of equals. The wonder is that God so loves the world and its inhabitants that we are invited to join the dance. Trinity Sunday is the day we set aside to celebrate the nearness of the God who draws us into the dance of life and love.
Veronica Lawson RSM