Such unauthorized commentary upon Bhagavad-gītā is known as Māyāvāda-bhāṣya, and Lord Caitanya has warned us about these unauthorized men. Lord Caitanya clearly says that anyone who tries to understand Bhagavad-gītā from the Māyāvādī point of view will commit a great blunder. The result of such a blunder will be that the misguided student of Bhagavad-gītā will certainly be bewildered on the path of spiritual guidance and will not be able to go back to home, back to Godhead.
Our only purpose is to present this Bhagavad-gītā As It Is in order to guide the conditioned student to the same purpose for which Kṛṣṇa descends to this planet once in a day of Brahmā, or every 8,600,000,000 years. This purpose is stated in Bhagavad-gītā, and we have to accept it as it is; otherwise there is no point in trying to understand the Bhagavad-gītā and its speaker, Lord Kṛṣṇa.