Tamāla Kṛṣṇa: "The Lord, being potent, can speak by breathing air as is confirmed in the Brahma-saṁhitā, for the Lord has omnipotence to perform through each of His senses the actions of all other senses. In other words, the Lord can speak through His breathing and He can impregnate by His eyes. It is said that He glanced over the material nature and thus fathered all the living entities. So after impregnating the conditioned souls into the womb of the material nature, He gave His direction in the Vedic wisdom as to how such conditioned souls can return home, back to Godhead. We should always remember that the conditioned souls in material nature are all eager for material enjoyment, and the Vedic directions are so made that one can satisfy one's perverted desires, then return to Godhead, having finished his so-called enjoyment. It is a chance for the conditioned souls to attain liberation. Therefore the conditioned souls must try to follow the process of yajña by becoming Kṛṣṇa conscious. Those who have not followed Vedic injunctions may adopt the principles of Kṛṣṇa consciousness and that will take the place of performance of Vedic yajñas or karmas."
Sixteen: "My dear Arjuna, a man who does not follow this prescribed Vedic system of sacrifice certainly leads a life of sin. For a person delighting only in the senses lives in vain (BG 3.16)." Purport...
Prabhupāda: Yes, this is very important. Read purport. Go on.