Since JWs believe they teach the only 'truth' they have the responsibility of coming up with reasonable explanations for scriptures which show their doctrine is not in complete harmony with the bible. Clear statements like those found in John 20:28, bring up questions that JWs can't answer. They should be able to answer these if they have teach the bible's absolute 'truth'
(Waves to AO!)
Indeed ! If they are the ones bold enough to hand out leaflets saying that God will destroy everyone except them because only they have the truth, the onus is theirs to prove it.
Onus is defined here incase anyone confuses it with a similar anatomical term http://en.wikipedia.org/wiki/Onus That word looks so weird when you type it ! Zico...