A priest and a rabbi used to meet each other every wednesday, both on bikes.
One wednesday, the priest is riding along and comes upon the rabbi on foot. Gets off. "Rabbi, where's your bike?".
Thus the rabbi,"Dunno. I just can't remember."
Priest says," I have a suggestion. I lost my bike once. So the following sunday, instead of delivering the sermon, I simply read out the Ten Commandments. Finished the service, people left. As I was leaving, I found my bike propped up outside. Obviously,'Thou Shalt Not Steal' had pricked someone's conscience. Problem solved."
The rabbbi replied,"Sounds good.I'll try it," and they go their ways.
The next wednesday, the priest is cycling along, and meets the rabbi, back on a bike.
"Rabbi,I see you've got your bike back. Did you try my method?".
Rabbi replies,"Certainly did. Instead of my sermon, I began reading out the Ten Commandments,and when I got to 'Thou Shalt Not Commit Adultery. THEN I remembered where I left it."