‘God is love’ (1 John 4:8). Those three words could hardly be more bouncy.
They seem lively, lovely, and as warming as a crackling fire. But ‘God is Trinity’? No, hardly the same effect: that just sounds cold and stodgy. All quite understandable, but Christians must see the reality behind what can be off-putting language. Yes, the Trinity can be presented as a fusty and irrelevant dogma, but the truth is that God is love because God is a Trinity.
To dive into the Trinity is a chance to taste and see that the Lord is good, to have your heart won and your self refreshed. For it is only when you grasp what it means for God to be a Trinity that you really sense the beauty, the overflowing kindness, the heart-grabbing loveliness of God. If the Trinity were something we could shave off of God, we would not be relieving Him of some irksome weight; we would be shearing Him of precisely what is so delightful about Him. For God is triune, and it is as triune that He is so good and desirable.