A small boy sat in church with his mother and listened to a sermon entitled “What is a Christian?” Every time the minister asked the question, he banged his fist on the pulpit for emphasis.
The tension produced by the sermon built up in the boy and he finally whispered to his mother, “Mama, do you know? Do you know what a Christian is?”
“Yes, dear,” she replied. “Now sit still and be quiet.”
Finally, as the minister was winding up the sermon, he again thundered, “What is a Christian?” and banged especially hard on the pulpit. This time it was too much for the little boy, so he jumped up and cried out, “Tell him, Mama, tell him!”
Baker Books , 1500 Illustrations for Biblical Preaching, by Michael P. Green