There is a joke amongst clergy that the curate or assistant clergy often end up preaching on Trinity Sunday because it’s the one the rector doesn’t want to do. And, quite frankly, I can also understand why the congregation might be tempted to skip it because even I don’t think I could bear hearing one more time how the Trinity is like an egg, or like the sun, or like a family.
The problem with talking about the Trinity is that allegory can slip very easily into cliche, – or worse, heresy – even with the best of intentions. And alternate language to invoke the Trinity can do the same. So then one might be tempted to resort to throwing one’s hands in the air and saying, ‘Well, it’s a mystery!’