Since one cannot visually experience the presence of the Supersoul, He appears before us as a liberated devotee. Such a spiritual master is none other than Krishna himself.
The disciples also know that they have to learn about the eternal relationship between God and the living entity from a self-realized soul.
The more, progress is made in devotional service under the guidance of the Bhagavatas, the more one becomes fixed in the transcendental loving service of the Lord. The messages of the book Bhagavata, therefore, has to be received from the devotee Bhagavata and the combination of these two Bhagavatas will help the neophyte devotee to make progress.
If one comes into contact with Krishna Consciousness and executes the process under the guidance of a bona fide guide, he is sure to go back to Godhead.