successive stages of purification

For the purification of the heart it is necessary first of all to listen to the chanting of the Holy Name. After the heart has been purified by listening to the Holy Name the fitness for the manifestation of the holy Form is attained on hearing the recital of scriptural accounts of the divine form. After the full appearance of the divine form, the divine qualities manifest themselves. After the appearance of the divine qualities, due to the characteristic traits of servitors, the knowledge of the distinctive and perfect identification of the devotee arises. Subsequent to this, after the full manifestation of the Name, form, quality and servitor has taken place, the transcendental activity of God manifests itself. For this reason this account of the successive stages of sadhana is written." (Krama-sandarbha commentary on Srimad Bhagavatam 7.5.18)

- taken from a lecture given by His Divine Grace Srila Bhaktisiddhanta Sarawsati Goswami Prabhupada on the Holy appearance of Radhashtami- Sept 19 1931