In the 1970`s if I remember correctly their was a worldwide campaign of delivering "Special Brochures" out to the public and you were not to engage with the public in conversations , the emphasis was to get to as many people as possible in your territory during the campaign.
I believe their was speculation that their would be seven such "Special Brochures" that were to be announced with the final ones being the hard hitting Judgement / condemnation on the people .
Of course no such thing ever eventuated after the few " Special Brochures" were released and the Bros & sisters were diligently placing them as though the end was nigh .
They were likening it to the 7 times the Jews marched around the walls of Jericho and the walls came down ?
Anybody else remember those times ?