Even if unserious persons perform devotional service according to regulative principles during kartika within the jurisdiction of Mathura in India, they are very easily awarded Lord’s personal service.
Lord Krishna is the adiguru of all the artist, all the dancers and the flute players, musicians He is the original guru – the master of everybody.
The only desire of devotees of the Lord is just to get the dust –surrender into the dust of Krishna’s Lotus Feet.
We can know Krishna to the degree we know pure devotees, to the degree we know vaishnavas, and to the degree we know our spiritual master.
For the scientists who want to see new atoms, the real microscopes are Bhagavad Gita and Srimad Bhagavatam. See through the eyes of the scriptures and you will see that there in the tiny atom the Lord is residing.
For us hearing “Bhagavad Gita As it Is” is like having maha-maha-maha prasad of the Lord, coming to us from Srila Prabhupada, previous acharyas and Arjuna.