''Next Sunday I am going to preach on the subject of liars. And in this connection, as a preparation for my discourse, I would like you all to read the seventeenth chapter of Mark''.

On the following Sunday, the preacher rose to begin and said, ''Now, then, all of you who have done as I requested and read the seventeenth chapter of Mark, please raise your hands.''

Nearly every hand in the congregation went up.

Then said the preacher, ''You are the people I want to talk to. There is no seventeenth chapter of Mark.''