A man is walking with St. Peter through Heaven during his new member orientation. They pass a room. The man looks inside and sees a priest delivering mass to a group of worshippers. St. Peter tells the man the worshippers are Roman Catholic.
They continue walking and soon pass another door where a group of people are passing out food. "Methodists," St. Peter replies to the man's quizzical look.
Soon, they walk past another door. Loud music echoes down the hallway. The man looks inside and sees dozens of people dancing, singing, laughing, and raising their hands. "I'm guessing they're Pentecostals?" he says. "Correct."
They turn a corner. The man hears raised voices arguing. As he gets closer to the door, the din grows louder. He can hear harsh words flying back and forth. He opens the door and ducks as a Bible flies out. The sound is deafening. Everywhere he turns he sees people arguing, pointing fingers at each other, and fighting.
"Who are these people?" the man asks.
"Calvinists." replies St. Peter. "They haven't stopped arguing long enough to realize anybody else is here."