I remember talking to two witnesses once...
Just as I was to enter the garden of a friend(not to steal) two funky looking fellows cross my path and being a well mannered person I greeted the taller dude. It was the time I was reading the bible and funnily one of the two asks me something about scripture... we were talking for about 90 minutes and during the chit chat I was always wondering - "dang, why do these two fellows know the bible so well?".
Before we parted ways I realized that they where Jehova people... naivete seems to be my forte.
