Little Johnny Joke

A teacher asks her Sunday school class to draw pictures of their favourite bible stories. But when she looks at some of the work she a little puzzled. One Picture shows four people on an airplane. So she asks little Johnny,
“What story is your picture of?”
“The flight to Egypt,” replies Johnny. "I see. And that must be Jesus, Mary and Joseph. But who’s the fourth person?"
“Oh,” replies Johnny, “that’s Pontius - the Pilot!”