hi.radhanath swami said we have to serve a person who chants with faith.. and that person according to gauranga is a a third class devotee. the question is how can we tell a person has faith in chanting at all? also a second class devotee who chants constantly and a first class devotee? they all have faith. but how can we tell who has faith. and what is the differences of faith from the third class to the first class?