The nondevotee’s approach to the teachings of the Gita is something like that of a bee licking on a bottle of honey. One cannot have a taste of honey unless one opens the bottle. Similarly, the mysticism of the Bhagavad-gita can be understood only by devotees, and no one else can taste it, as it is stated in the Fourth Chapter of the book. Nor can the Gita be touched by persons who envy the very existence of the Lord. Therefore, the Mayavadi explanation of the Gita is a most misleading presentation of the whole truth. Lord Caitanya has forbidden us to read commentations made by the Mayavadis and warns that one who takes to such an understanding of the Mayavadi philosophy loses all power to understand the real mystery of the Gita. If individuality refers to the empirical universe, then there is no need of teaching by the Lord. The plurality of the individual soul and of the Lord is an eternal fact, and it is confirmed by the Vedas as above mentioned.
It is now clearly stated that the real form of this banyan tree cannot be understood in this material world. Since the root is upwards, the extension of the real tree is at the other end. When entangled with the material expansions of the tree, one cannot see how far the tree extends, nor can one see the beginning of this tree. Yet one has to find out the cause. “I am the son of my father, my father is the son of such-and-such a person, etc.” By searching in this way, one comes to Brahma, who is generated by the Garbhodakasayi Vishnu. Finally, in this way, when one reaches the Supreme Personality of Godhead, that is the end of research work. One has to search out that origin of this tree, the Supreme Personality of Godhead, through the association of persons who are in knowledge of that Supreme Personality of Godhead. Then by understanding one becomes gradually detached from this false reflection of reality, and by knowledge one can cut off the connection and actually become situated in the real tree.
The description of the banyan tree is further explained here. Its branches spread in all directions. In the lower parts, there are variegated manifestations of living entities — human beings, animals, horses, cows, dogs, cats, etc. These are situated on the lower parts of the branches, whereas on the upper parts are higher forms of living entities: the demigods, Gandharvas and many other higher species of life. As a tree is nourished by water, so this tree is nourished by the three modes of material nature. Sometimes we find that a tract of land is barren for want of sufficient water, and sometimes a tract is very green; similarly, where particular modes of material nature are proportionately greater in quantity, the different species of life are manifested accordingly.
The entanglement of this material world is compared here to a banyan tree. For one who is engaged in fruitive activities, there is no end to the banyan tree. He wanders from one branch to another, to another, to another. The tree of this material world has no end, and for one who is attached to this tree, there is no possibility of liberation. The Vedic hymns, meant for elevating oneself, are called the leaves of this tree. This tree’s roots grow upward because they begin from where Brahma is located, the topmost planet of this universe. If one can understand this indestructible tree of illusion, then one can get out of it.