An orthodox priest, a bishop, and a Rabbi
...are arguing over whose religion is the best. The bishop says, "We should convert the fiercest bear we can find to our religion, for only the best religion should help be able to convert such a ferocious animal."
The next day they set out to prove themselves. After a few hours the bishop returns with a bear. The bear is surprisingly tame and is busy reading the bible. Soon afterwards the orthodox priest returns with the bear that he converted. The two of them begin to discuss how they accomplished the feat and who did a better job.
As time passes they begin to wonder where the rabbi was. At the end of the day they notice the rabbi hobbling towards them. The rabbi's neck is in a brace, his arm in a sling, and his face covered with numerous cuts and bruises. "What happened to you?" The bishop and priest ask.
The rabbi replies in a raspy voice, "I guess circumcising him wasn't a good place to start."