A preacher rode his bike to church often until someone took it.
He told a friend that he would like to know who took his bike. 
The friend said next Sunday preach your serman on The Ten Commandments, when you get to thou shalt not steal, the one that
took it will show guilt and you will know.  The preachers friend ran across him and asked if he took his advice. The preacher said, I sure did. The friend asked, did you find out who took it? The preacher 
said it wasn't stolen after all, when I got to the Commandment, thou shalt not commit adultery, I rembered where I left my bike................