In the current issue of Conversation, Dr Gary Cymbaluk describes one of the ways that the doctrine of the Trinity is so important:
The world was created by the tripersonal God: Father, Son and Holy Spirit. We are not created in the image of a unipersonal god. Creation—including human beings—is not the result of an individual monad. Creation is not an accident of violent, random forces. The world was created by a God who existed in perfect, harmonious relationship, unified in their love and knowledge of each other from all eternity.
A unipersonal god did not love until he created the world and human beings. A unipersonal god does not have love and relationship as his essence. it is not an essential aspect of his character and nature. The essence of a unipersonal god is power and greatness. A unipersonal god tends to create moralism and absolutism.
What does the doctrine of triune god mean for Christians? The essential implication is that if a triune God created the world, then relationships of love is what our lives are really all about. Since before time began… ultimate reality consisted of a community of persons knowing and loving one another. Therefore, ultimate reality is about love relationships.
The Christian doctrine of the trinity offers a provocative challenge to our culture… Instead of self-centredness, the Father, the Son and the Holy Spirit represent in their very essence mutually self-giving love. Each person in the Godhead doesn’t insist that any of the others revolve around him, rather they centre on one another. They glorify one another, adore one another, serve one another and defer to one another.
It’s an excellent article – all the better because it takes us not only to the Trinity but to the Cross and to Christ who is the only one who can take us out of our self-centredness and sweep us into that Trinity. Read the whole thing in CM Vol. 2 Issue 1.