Something like... (Books)
Bhagavad-gita As It Is
BG Chapters 1 - 6
BG 2.12, Purport:
It is clearly mentioned in many places in the Gītā that this spiritual individuality is understood by those who are devotees of the Lord. Those who are envious of Kṛṣṇa as the Supreme Personality of Godhead have no bona fide access to the great literature. The nondevotee's approach to the teachings of the Gītā 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-gītā 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 Gītā be touched by persons who envy the very existence of the Lord.