There is an old tradition in the church: on Trinity Sunday, rectors do their best to get someone else to preach. If they have a curate or associate priest, he or she gets the pulpit on that day. If not, they try to invite some old retired priest to fill in (as Father George has done today). No one really wants to preach on Trinity Sunday, the only day of the Christian year given to the celebration or commemoration of a theological doctrine, mostly because theology is dull, dry, and boring to most people and partly because this particular theology is one most of us get wrong no matter how much we try to do otherwise. Back when I was a curate getting the Trinity Sunday assignment, my rector encouraged me with the sunny observation that, listening to a sermon in almost any church on Trinity Sunday, one could be practically guaranteed to hear heresy.
As I started preparing to preach on this Trinity Sunday, however, I thought, “I have an out, a handy escape hatch” because today is not only the church’s feast of the one, holy, blessed, and glorious Trinity, it is also the secular, some say “Hallmark,” holiday of Father’s Day. So, I thought, “I’ll talk about Father’s Day and if the Trinity decides to show up, well … that’ll be fine.”