Complex sentence: So it can be said that it was not a religion in the proper sense or in comparison with the mainstream religions, as there was no compulsion in its acceptance, no reward, no punishment and no establishment of religious institutions.
Split into simpler sentences: So it can be said that it was not a religion in proper sense or in comparison with the mainstream religions. As there was no compulsion in its acceptance, no reward, no punishment and no establishment of religious institutions.