Lord Caitanya is the unchallenged spiritual stalwart who propagated the process of surrender to Kṛṣṇa, the conclusion of all the Bhagavad-gītā's teachings.
Renunciation Through Wisdom 5.1: The Supreme Lord is one, yet He has prābhava (fully potent) expansions and vaibhava (partially potent) expansions. The Supreme Lord is endowed with at least six unlimited opulences—absolute wealth, power, beauty, knowledge, fame, and renunciation. With His countless mouths Śrī Ananta Śeṣa is unable to fully describe these opulences. Therefore the Lord is also said to be indescribable, all-pervading, and unmanifest. The Upaniṣads describe the Supreme Lord as asamaurdhva, "one without a second." We have already established this truth. Similarly, Lord Kṛṣṇa Himself says in the Bhagavad-gītā (Chapter 10) that He is the Aśvattha tree, fire, Śrīla Vyāsadeva, Arjuna, and so on. These facts have also been firmly substantiated. To perfectly comprehend the absolute pastimes of the absolute Supreme Godhead is impossible through any of the "isms," such as empiricism, impersonalism, or sophism. Only by the Lord's mercy can one fathom the Supreme Godhead. That same Supreme Personality benignly reveals the truth about Himself in the Bhagavad-gītā. This text is the essence of all the Vedic scriptures and is the synthesis of all conflicting "isms." Lord Caitanya is the unchallenged spiritual stalwart who propagated the
process of surrender to Kṛṣṇa, the conclusion of all the Bhagavad-gītā's teachings. Those who follow in His footsteps are the real yogīs and devotees.