Krishna explains to Arjuna the classification of knowledge, action, and the doer based on the three modes of material nature (guna). Krishna elucidates that knowledge, action, and the doer can be categorized into three types according to their alignment with the modes of material nature—sattva (goodness), rajas (passion), and tamas (ignorance).

Krishna's statement reflects the fundamental principle of the Gita regarding the influence of the three modes of material nature on human consciousness and behaviour. According to this teaching, every individual is influenced by the interplay of these three modes, which determine their thoughts, actions, and perceptions.

Krishna categorizes knowledge (jñana), action (karma), and the doer (kartā) into three types based on their inherent qualities and tendencies arising from the predominance of a particular guna. Knowledge rooted in sattva (goodness) is characterized by wisdom, clarity, and spiritual understanding. Action influenced by rajas (passion) is marked by ambition, desire for success, and worldly pursuits. The doer motivated by tamas (ignorance) is driven by lethargy, delusion, and attachment to the material world.

Through this classification, Krishna highlights the diversity in human nature and behavior arising from the influence of the three gunas. He emphasizes the importance of self-awareness and discernment in recognizing the predominant mode influencing one's thoughts and actions.

Moreover, Krishna's instruction serves as a guide for spiritual seekers in understanding the nature of knowledge, action, and the doer. By discerning the qualities associated with each mode of material nature, individuals can cultivate sattva and transcend the lower modes of rajas and tamas, leading to spiritual growth and self-realization.

This verse underscores the principle of guna-vibhaga yoga, the yoga of the division of the modes of material nature, elucidated in the Bhagavad Gita. It invites seekers to introspect and examine the quality of their thoughts, actions, and intentions, recognizing the influence of the three gunas on their spiritual evolution.

In essence, this verse highlights the diversity in human nature arising from the interplay of the three modes of material nature. It encourages seekers to cultivate sattva and transcend the lower modes of rajas and tamas through self-awareness, discernment, and spiritual practice, ultimately leading to liberation and eternal bliss.