Why are witnesses allowed to write their own magazines about the bible? Allowed by whom ? Isn't this a reasonably free world ?
why can't they just teach the others how to undersatnd the Bible for themselves ? Now that's a different matter.
They can't because they don't understand it themselves.
They don't because of various reasons of fear for loss - if they can't instill their minds' way into your head, then you're probably not going to 'go' with them - meaning you won't join them or continue to support them and so forth - rationalised in their own mind as "you're going to die without them" - like the abusive control freak whose way is "your nothing without me" kind of thing.