When our youngest was just shy of two years old, we were in a local department store one day. I was pouring through racks as I pushed him in his umbroller (that was in umbrella stroller which folded very neatly for travel and ease of use). Suddenly, he sang forth Lu-yah dine glo-ree. Lu-yah, ah-men! To the top of his lungs. The melody was perfect, and the words were apparently what he heard as I sang it to him each night as he drifted off to sleep.

He may not have understood revival, but he unde...