I don't know why those in charge decided to designate one Sunday as "Trinity Sunday." Shouldn't every Sunday be "Trinity Sunday"? A celebration of the great mystery of the three-in-one, one-in-three God? As Christians we confess God to be Father, Son, and Holy Spirit, one God, three-persons, co-equal, co-eternal, one in essence, nature, power, action, and will. It's basic to what we believe as Christians.
But do we really know what that means or know why that's important? To the outsider it might look like a lot mental gymnastics, become theological contortionists, in order to justify a contradiction. 1+1+1 does NOT equal One. Volumes of books have been written trying to sort out the math. How can God really be three distinct persons, yet one God? It simply doesn't add up.
Other than Christ the King Sunday, Trinity Sunday is the day when we feel most tempted to keep God at a philosophical distance. We muse about the mystery of the Trinity. We try to do make the math work. On no other Sunday do most preachers do a weaker job connecting God to peoples' lives.
I think that's because we don't...(whole thing here)