How many can you think of...
They speak for God.
It would seem presumptuous to say they speak for God,
They are neither inspired nor infallible.
They are God's only channel for issuing truth here on earth
They won't be apologising for any errors/falsehoods they have promoted in the past that fail.
Congregation members must be quick and apologise for their errors to avoid harsh discipline/disfellowshipping.
When they change a major belief/doctrine you must not complain or criticise them.
Try changing your beliefs whilst still a jw and see if they complain or criticise you..
I'm sure you can think of more...