When my niece was a toddler she asked her mother, "How does a car work?"

My sister-in-law took her to the garage and instead of popping the hood to explain how internal combustion, fuel injection, and alternators function, she pointed to the gas cap and asked her little daughter, "What's this?".

"That's where the gas goes!" said the toddler.

Then her mom pointed to the ignition.

"That's where the key goes!" said her daughter.

Then her mom pointed to the car seats.

"That's where you go - and where I go!"

"That's right!" said her mom, "Cars are very complicated, but the important thing to know is that when everything is in the right place, the car runs pretty well."

"Oh, I get it!" said her daughter, who then added, "And mom, it's not that complicated!"

This weekend many faith communities commemorate Trinity Sunday. It's the only feast of the Church not dedicated to an event or a saint, but instead, a theological concept - our own feeble attempt at explaining God.

Yes, you've heard them all before, Patrick's 3-leafed clover, the Celt's overlapping 3 circles, the harmony of a 3-note chord, and the interplay of water - as liquid, gas, and ice - three forms of one element.

At the end of the day our human constructs are as summative as my sister-in-laws explanation of a car: we are able to understand the inner workings of God and the universe as well as my niece understands how an automobile works. Of course, this doesn't mean we shouldn't ask questions, nor get too frustrated when we find ourselves unable to understand everything we wish.

Instead, it's about resting in God - relying on God - trusting that, when everything is in its place, things run pretty well.