TRINITY SUNDAY 2019

Icon of the Holy Trinity -- Rublev

• Proverbs 8:1-4, 22-31 and Psalm 8  • 
• Romans 5:1-5  • 
• John 16:12-15

The Sunday after Pentecost is unique in the Church’s year. Whereas every other holy day celebrates an event or a person, Trinity Sunday celebrates a theological doctrine – and what is more, a doctrine that is very perplexing. The God in whom Christians believe, it holds, is ‘Three in One’ and ‘One in Three’.  This seems to defy even the most basic principles of arithmetic. ​

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​How can anything be both three things and only one thing? Yet that is what the doctrine obliges Christians to hold. Furthermore, this is not some optional extra that we may or may not choose to go along with. Since the fourth century, when the Creeds were finalized, the Doctrine of the Holy Trinity has been central to all the major branches of the Christian Church – Catholic, Orthodox, Anglican, Lutheran and Reformed. There are Unitarian churches who deny it, certainly, but these have always been in a small minority.
               Why has Trinitarianism been thought so crucial? The answer is revealed in part by this week’s readings. The Epistle and the Gospel comprise two short and familiar passages. The first comes from Paul’s most important letter – his Letter to the Romans. Paul wrote this several centuries before theologians came up with carefully formulated doctrines, and over a thousand years before Trinity Sunday became a fixture in the Church's Calendar. So here, we must say, Paul is not advancing a complex theological proposition, but simply trying to capture, and convey, his own profound experience of what it means to be a Christian. Trinitarianism arises because in doing so, he simply cannot avoid talking about God, and about Jesus, and about the Holy Spirit, all in equal measure.

Celtic Symbol of the Holy Trinity

In this respect, however, the Epistle does no more than the Gospel passage itself. Like Paul, John wrote these words of Jesus a very long time before theologians set to work on them. Yet here too we find that if Jesus is to describe his mission properly, and convey his promise to those who believe in him, a threefold reference is inescapable -- the Father who sends, the Son who obeys, and the Spirit who remains. The Doctrine of the Holy Trinity is certainly perplexing, but this is because it reflects a great mystery to which we are necessarily compelled, whenever we try to affirm the truth about Jesus Christ.

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