purpose

 
The four divisions of human life, namely the brahmacārī, the gṛhastha, the vānaprastha, and the sannyāsī, are all meant to help men become perfect yogīs or transcendentalists.
The four divisions of human life, namely the brahmacari, the grhastha, the vanaprastha, and the sannyasi, are all meant to help men become perfect yogis or transcendentalists. Since human life is not meant for our enjoying sense gratification like the animals, the four orders of human life are so arranged that one may become perfect in spiritual life. The brahmacaris, or students under the care of a bona fide spiritual master, control the mind by abstaining from sense gratification. They are referred to in this verse as sacrificing the hearing process and the senses in the fire of the controlled mind. A brahmacari hears only words concerning Krsna consciousness; hearing is the basic principle for understanding, and therefore the pure brahmacari engages fully in harer namanukirtanam-chanting and hearing the glories of the Lord. He restrains himself from the vibrations of material sounds, and his hearing is engaged in the transcendental sound vibration of Hare Krsna, Hare Krsna. Similarly, the householders, who have some license for sense gratification, perform such acts with great restraint. Sex life, intoxication and meat eating are general tendencies of human society, but a regulated householder does not indulge in unrestricted sex life and other sense gratifications. Marriage on principles of religious life is therefore current in all civilized human society because that is the way for restricted sex life. This restricted, unattached sex life is also a kind of yajna because the restricted householder sacrifices his general tendency toward sense gratification for higher transcendental life.    (More...)
The varṇāśrama institution also aims at this for satisfying Lord Viṣṇu.
Ramesvara: [reading] ...mukta-sahgaḥ samacara [Bg 3.9]: "Work done as a sacrifice for Visnu has to be performed. Otherwise, work binds one to this material world. Therefore, O son of Kunti, perform your prescribed duties for His satisfaction, and in that way you will always remain unattached and free from bondage." Should I read the purport? Purport: "Since one has to work even for the simple maintenance of the body, the prescribed duties for a particular social position and quality are so made that the purpose can be fulfilled. Yajna means Lord Visnu or sacrificial performances. All sacrificial performances also are meant for the satisfaction of Lord Visnu. The Vedas enjoin: yajno vai visnuḥ. In other words, the same purpose is served whether one performs prescribed yajnas or directly serves Lord Visnu. Krsna consciousness is therefore performance of yajna as it is prescribed in this verse. The varnasrama institution also aims at this for satisfying Lord Visnu. Varnasramacaravata purusena paraḥ puman visnur aradhyate [Cc Madhya 8.58], from the Visnu Purana [3.8.9]. Therefore one has to work for the satisfaction of Visnu. Any other work done in this material world will be a cause of bondage, for both good and evil work have their reactions, and any reaction binds the performer. Therefore one has to work in Krsna consciousness to satisfy Krsna, or Visnu, and while performing such activities one is in a liberated stage. This is the great art of doing work, and in the beginning this process requires very expert guidance. One should therefore act very diligently under the expert guidance of a devotee of Lord Krsna, or under the direct instruction of Lord Krsna Himself, under whom Arjuna had the opportunity to work. Nothing should be performed for sense gratification, but everything should be done for the satisfaction of Krsna. This practice will not only save one from the reaction of work but will also gradually elevate one to transcendental loving service of the Lord, which alone can raise one to the kingdom of God." [break]    (More...)
Unless one satisfies Kṛṣṇa, one cannot correctly observe the principles of varṇāśrama-dharma.
Arjuna is a ksatriya, and as such he is participating in the varnasrama-dharma institution. It is said in the Visnu Purana that in the varnasrama-dharma, the whole aim is to satisfy Visnu. No one should satisfy himself, as is the rule in the material world, but one should satisfy Krsna. So, unless one satisfies Krsna, one cannot correctly observe the principles of varnasrama-dharma. Indirectly, Arjuna was advised to act as Krsna told him.    (More...)

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