Once there was a Sunday School teacher who taught a 8th grade class. One
day, at the end of a class, he told the students, “Next Sunday I will
teach about the sin of lying. To help you understand, I want you to read
all of Mark 17.” Then he dismissed the class. The next Sunday, he asked
“Okay, before I start my lesson, I want to know who read Mark 17.”
Everyone raised their hand. He replied, “Mark only has 16 chapters. Now I
shall continue with my lesson………….”