Bhagavān Kṛṣṇa now explains the yajña-cycle more fully. The previous verses taught that human beings must live a life of yajña, gratitude, offering, and mutual nourishment. Now the verse shows why this is not merely a religious sentiment. It is the structure of life itself.

All beings depend on food. The body is sustained by food. Plants, animals, humans, and all embodied beings need nourishment. Food does not appear independently. Food depends on rain. Rain nourishes the soil, fills rivers, supports crops, and sustains life.

Rain depends on yajña. Here yajña is not merely a ritual fire offering. It is the dhārmic way of life by which human beings live in harmony with the cosmic and natural order. When human beings live with reverence, contribution, restraint, and responsibility, the order is preserved. When they live with greed and exploitation, the order is disturbed.

Yajña depends on karma. This means yajña is not merely an attitude in the mind. It must express as action: offering, sharing, service, worship, dānam, care for nature, protection of animals, study of scripture, and duties performed properly. Karma-yoga is therefore dharma — that which maintains the harmony of creation.

This verse gives a complete chain: karma → yajña → rain → food → beings. If karma is selfish and adhārmic, yajña is weakened. If yajña is weakened, harmony with nature is disturbed. If nature is disturbed, food and life suffer. But if karma becomes karma-yoga, yajña is maintained, rain and food are supported, and beings flourish.

The teaching is especially important because human beings have free will. Other living beings are largely programmed to live within nature’s balance. Human beings alone can either preserve the world or damage it. Therefore, a karma-yogī does not live as an isolated consumer. He lives as a responsible participant in Bhagavān’s order.