This Sunday is known as Trinity Sunday and provides us with an opportunity to ponder the nature and mystery of God. It is the only day in the church calendar that is named for and celebrates a doctrine rather than an event in church history. It also harks back to the first few centuries of the Christian movement when there were fierce debates about the nature of Christ and, therefore, the nature of God.
The doctrine itself is reasonably simple, namely that the one and only God exists as three distinct persons, Father, Son and Holy Spirit. The reality that this doctrine points to is beyond our understanding, however, despite many creative attempts of trying to explain it. At the risk of going too far, one implication we may draw from the doctrine of the Trinity is that God is community and values self-giving, loving relationships.
So relationship with God, with one another and with our neighbour lie at the heart of our faith.