A priest goes into a bar, which is empty, except for him and the barman. He orders a beer then says, "D'you know who stole my bike?"

"No," answers the barman.

"I just left it for a while and I couldn't find it," explained the priest.

"I have an idea. During the next sermon on Sunday, recite the ten commandments, and when you reach Thou shall not steal, the idiot who did it will feel guilty and give it back," explained the barman

"Thanks, I'll try it," said the priest.

On Sunday, after the sermon, the priest is walking back to the bar with his bike, and he sees the barman outside.

"You found it then," said the barman. "It worked then?"

"Not quite," said the priest.

"What do you mean?" asked the barman.

the priest replied, "Well... when I got up to Thou shall not commit adultery, I remembered where I left me bike!"