The Lord advised Arjuna to regulate the senses from the very beginning so that he could curb the greatest sinful enemy, lust, which destroys the urge for self-realization, and specifically, knowledge of the self. Jïänam refers to knowledge of self as distinguished from non-self, or, in other words, knowledge that the spirit soul is not the body. Vijïänam refers to specific knowledge of the spirit soul and knowledge of one's constitutional position and his relationship to the Supreme Soul. It is explained thus in the Çrémad-Bhägavatam: jïänaà parama-guhyaà me yad-vijïäna-samanvitam / sarahasyaà tad-aìgaà ca gåhäna gaditaà mayä: "The knowledge of the self and the Supreme Self is very confidential and mysterious, being veiled by mäyä, but such knowledge and specific realization can be understood if it is explained by the Lord Himself." Bhagavad-gétä gives us that knowledge, specifically knowledge of the self. The living entities are parts and parcels of the Lord, and therefore they are simply meant to serve the Lord. This consciousness is called Kåñëa consciousness. So, from the very beginning of life one has to learn this Kåñëa consciousness, and thereby one may become fully Kåñëa conscious and act accordingly.