Unfortunately, despite Lord Śrī Kṛṣṇa's direct order and the teachings of the Bhagavad-gītā, less intelligent people misunderstand Him to be nothing but a great historical personality, and thus they cannot accept Him as the original Personality of Godhead. Such men with a poor fund of knowledge are misled by many nondevotees. Thus the teachings of the Bhagavad-gītā were misinterpreted even by great scholars. After the disappearance of Lord Śrī Kṛṣṇa there were hundreds of commentaries on the Bhagavad-gītā by many erudite scholars, and almost every one of them was motivated by self-interest.
Lord Śrī Caitanya Mahāprabhu is the selfsame Lord Śrī Kṛṣṇa. This time, however, He appeared as a great devotee of the Lord in order to preach to the people in general, as well as to religionists and philosophers, about the transcendental position of Śrī Kṛṣṇa, the primeval Lord and the cause of all causes. The essence of His preaching is that Lord Śrī Kṛṣṇa, who appeared at Vrajabhūmi (Vṛndāvana) as the son of the King of Vraja (Nanda Mahārāja), is the Supreme Personality of Godhead and is therefore worshipable by all.