Thomas Troeger, a Presbyterian pastor and gifted preacher, tells a story of an experience he had once. He wrote:

"One day several years ago I was in a department store buying myself a new shirt when a complete stranger walked up to me and said, ‘You must be Henry Troeger's son.'

"I looked at this person and I said, ‘I don't believe I have ever seen you.'

"He said, ‘Oh, no, you have never met me at all, but a long time ago I worked with your father. I was a close colleague of his a…