Today and next Sunday are special days which direct our attention to the central mysteries of our faith. Today on the first Sunday after Pentecost, we celebrate the Solemnity of the Most Holy Trinity. This feast is an invitation for us to think about our belief in the Triune God. One God in three persons. The mystery of the Most Holy Trinity is the central mystery of Christian faith and life. It is a mystery of faith which we profess every time as we make the Sign of the Cross and when we say the Creed. The good thing about a mystery is there is always more that we can learn about it! Theologian Karl Rahner said “Mystery is not that which I cannot know, but that which I cannot exhaust.”
The Gospel reading is taken from Matthew’s Gospel and although it is short, only 4 verses, it contains instructions which are as relevant to us today as they were for the eleven disciples who met Jesus on the mountaintop at Galilee as he had instructed them to. They see Jesus and fall down in worship although some hesitated at first. Jesus approaches them and commissions them to baptise and teach. It is the final commission of Jesus who tells the eleven to go out to all nations. Jesus’ mission is now handed onto the disciples who are to go out and baptise and teach throughout the world in the name of the Father, Son and Holy Spirit and Jesus also gives them courage by saying, “Know that I am with you always; yes, to the end of time.” With these words Matthew ends his Gospel.
This promise of Jesus being with us always is a promise which strengthens our daily lives, it is a wonderful thought. In today’s reading Jesus confirms that there are three Persons in one God and just like the disciples we as baptised Christians are sent out to evangelise and be witnesses of Christ. The essence of being a Christian is knowing God and although we can never fully understand the divine mystery, through the Trinity, we can have what C. S. Lewis in his book “Mere Christianity” calls a threefold knowledge of Him. Even though God is always greater than my knowledge of Him, I can know God through what he has shown us about himself. I can know God in three different ways, I can experience God in three different ways and I can love in three different ways. When we realise the wonder of this threefold knowing and loving then the Trinity is not a dry, unreachable dogma but it is the heart and essence of our belief. God wants us today to get excited about the mystery of being Three-in-One.