I have just started reading 'reasoning from the scriptures with jehovahs witnesses' by Ron Rhodes.
One of the suggested questions to ask a jw is,
If jehovahs witnesses are the only true witnesses for god,and if the witnesses as an organization came into being late in the 19th century,does this mean that god was without a witness forover 18 centuries of church history?
Can anyone remember the 'official' line on this and if you had been asked this as a jw how would you have responded?