Here's one good example of why we need the Magisterium. Look what passes for a sermon in this guy's independent fundamentalist strip-mall church. He observes that the phrase "him that pisseth against the wall" is used six times in the King James translation of the Bible. He asks what God means when he says that He will destroy all those who "pisseth against the wall." From that observation, he moves to the fact that it is now widely prohibited for a man to urinate standing up in toilets in Germany, both in public restrooms and private homes. He then concludes by observing that what is wrong with America today is that men -- from the President of the United States on down to the average Joe in the pew -- no longer knows how to stand up and piss like a man. The essence of the Gospel. Why didn't I notice before?
[Hat tip to S.F.]