Every year, just before Easter, the Chief Rabbi in Rome goes to the Vatican and
presents an ancient, and by now quite tattered, envelope to the Pope.

The Pope inspects the envelope, shakes his head, and hands it back to the Chief Rabbi,
who then departs. This has been going on for nearly two thousand years.

One year, it happened that there was a new Pope and a new Chief Rabbi. When the Chief
Rabbi presented the ancient envelope to the Pope, as he had been instructed to do by his
predecessor. The Pope looked it over and handed it back as he had been told to, in turn,
by his predecessor… but then the Pope said, "This is an unusual ritual. I don’t
understand it. What is in this envelope?"

"Damned if I know," answered the Chief Rabbi. "I’m new here myself. But,
hey, let’s open it and find out."

"Good idea," said the Pope.

So together, they slowly and carefully opened the envelope, to find… the caterer’s
bill for the Last Supper.