Why we must reject the message

We were asked a question recently - "What did William Branham teach that takes a person away from Christ?"

The question was posed to an ex-message believer by someone who still follows the message. The message follower made the point that, even if William Branham's doctrine is hard to understand, or even if some of it is wrong, it shouldn't matter because the spirit behind it is true. He went on to ask: What's wrong with wearing dresses, not drinking, etc.