There is no difference between the teachings of Lord Caitanya presented here and the teachings of Lord Kṛṣṇa in the Bhagavad-gītā. The teachings of Lord Caitanya are practical demonstrations of Lord Kṛṣṇa's teachings. Lord Kṛṣṇa's ultimate instruction in the Bhagavad-gītā is that everyone should surrender unto Him, Lord Kṛṣṇa. Kṛṣṇa promises to take immediate charge of such a surrendered soul. The Lord, the Supreme Personality of Godhead, is already in charge of the maintenance of this creation by virtue of His plenary expansion, Kṣīrodakaśāyī Viṣṇu, but this maintenance is not direct. However, when the Lord says that He takes charge of His pure devotee, He actually takes direct charge. A pure devotee is a soul who is forever surrendered to the Lord, just as a child is surrendered to his parents or an animal to its master. In the surrendering process, one should (1) accept things favorable for discharging devotional service, (2) reject things unfavorable, (3) always believe firmly in the Lord's protection, (4) feel exclusively dependent on the mercy of the Lord, (5) have no interest separate from the interest of the Lord, and (6) always feel oneself meek and humble.
The Lord demands that one surrender unto Him by following these six guidelines, but the unintelligent so-called scholars of the world misunderstand these demands and urge the general mass of people to reject them. At the conclusion of the Ninth Chapter of the Bhagavad-gītā, Lord Kṛṣṇa directly orders, "Always think of Me, become My devotee, worship Me alone, and offer obeisances unto Me alone." By so doing, the Lord says, one is sure to go to Him in His transcendental abode. But the scholarly demons misguide the masses of people by directing them to surrender not to the Personality of Godhead but rather to the impersonal, unmanifested, eternal, unborn truth. The impersonalist Māyāvādī philosophers do not accept that the ultimate aspect of the Absolute Truth is the Supreme Personality of Godhead. If one desires to understand the sun as it is, one must first face the sunshine and then the sun globe, and then, if one is able to enter into that globe, one may come face to face with the predominating deity of the sun. Due to a poor fund of knowledge, the Māyāvādī philosophers cannot go beyond the Brahman effulgence, which may be compared to the sunshine. The Upaniṣads confirm that one has to penetrate the dazzling effulgence of Brahman before one can see the real face of the Personality of Godhead.