1. Krsna’s especial mercy to His devotees.
Chapter 10 Text 10-11
Krsna’s especial mercy to His devotees.

2. Text 10-11 teñäà satata-yuktänäà bhajatäà préti-pürvakam
dadämi buddhi-yogaà taà yena mäm upayänti te
teñäm evänukampärtham aham ajïäna-jaà tamaù
näçayämy ätma-bhäva-stho jïäna-dépena bhäsvatä
To those who are constantly devoted to serving Me with love, I give the understanding by which they can come to Me. To show them special mercy, I, dwelling in their hearts, destroy with the shining lamp of knowledge the darkness born of ignorance.

3. Buddhi-Yoga Buddhi-yoga itself is action in Kåñëa consciousness;
Buddhi-Yoga is the process by which one gets out of the entanglement of this material world.
Kåñëa from within giving instructions so that one may ultimately come to Him without difficulty.
Only qualification - one is sincere and devoted to the activities of devotional service.

4. Devotees helped by Krsna
Mäyävädé philosophers criticize the devotees because they think that most of the devotees are in the darkness of ignorance and are philosophically naive sentimentalists.
There are very, very learned scholars who have put forward the philosophy of devotion. E.g. Baldev Vidhya Bhushan.
But even if a devotee does not take advantage of their literatures or of his spiritual master, if he is sincere in his devotional service he is helped by Kåñëa Himself within his heart.

5. Understanding Krsna
There is no possibility of understanding the Supreme Truth, the Absolute Truth, the Supreme Personality of Godhead, simply by speculating, for the Supreme Truth is so great that it is not possible to understand Him or to achieve Him simply by making a mental effort.
Only by devotional service is the Supreme Truth, Kåñëa, pleased, and by His inconceivable energy He can reveal Himself to the heart of the pure devotee.

6. The essential teaching
The ultimate goal, Viñëu, can be attained only by this chant and by devotional service, and not by mental speculation or argument.
The pure devotee does not have to worry about the material necessities of life; he need not be anxious, because when he removes the darkness from his heart, everything is provided automatically by the Supreme Lord, who is pleased by the loving devotional service of the devotee.