Not to derail the OP but what they did was state the complete opposite of what the bible said was fact. The bible says "Jesus doesn't know"...they say "Jesus knows". With that kind of logic anything can be changed. Whatever is stated as true can be redefined as "true when it was written." Which reminds me of the Catholic viewpoint that the Apostle Peter and hence future popes could make whatever changes they deemed necessary because when he was given the keys to the kingdom whatever they loose will be loosed in heaven.
Why can't someone jiust say "do you follow the bible or the governing body" to a witness and show them the scripture and ask them what the bible says and then show them what the Society says and then ask them what they believe. If they answer in harmony with the Society then they reject the bible when the Society differs from what the bible says. Good and simple talking point.