Sometimes the Personality of Godhead descends Himself; otherwise, He deputes His confidential servants to do this act of kindness. All the messiahs-saints who have come before or who will come in the future to preach the transcendental message of the kingdom of Godhead—are to be understood as the most confidential servants of the Personality of Godhead. Lord Jesus Christ appeared as the son of Godhead, Muhammad introduced himself as the servant of Godhead, and Lord Caitanya presented Himself as the devotee of Godhead. But whatever may be their identity, all such messiahs were of the same opinion about one thing. They preached unanimously that there is no peace and prosperity in this mortal world. All of them agreed that we have to go to a separate world, where peace and prosperity have their real being. We have to search out our eternal peace and prosperity in the kingdom of God, which is a place other than this mortal world. Even such messiahs and reformers as Lord Buddha—who did not accept the existence of Godhead and preached morality and ethics in the spirit of atheism—and Śaṅkarācārya—who did not accept the Personality of Godhead and preached morality and ethics in the spirit of pantheism—never preached that there is any possibility of attaining eternal peace and prosperity in this material world.
But at the present moment, the leaders of thought and the people in general have decided mistakenly that there is no other world except the one in which we live—that all peace and prosperity are available here, and that there is no existence of any other world wherein we can find a better position than here. According to such leaders, the material body is the actual self, understanding everything that pertains to the body constitutes self-realization, and we have no more duty than satisfying the senses of the body and maintaining it by all means. According to these leaders, God and philosophical approaches to Him are merely leisure pursuits or parlor games to exercise the brain. By such discussions, however, the world does not gain anything of substance.
So Marshal Arjuna pretended to display weakness, placing himself in the category of ordinary people who are illusioned in the material world. And by this action of his, Marshal Arjuna helped in the manifestation of Bhagavad-gītā from the transcendental lips of the Personality of Godhead. Whenever the Personality of Godhead descends to this mortal world, He is accompanied by His confidential servants. Marshal Arjuna is the eternal, confidential servant of the Personality of Godhead, Śrī Kṛṣṇa, and thus the philosophy of Bhagavad-gītā was taught to him directly for the benefit of the people in general.
Being an unalloyed devotee of the Personality of Godhead, Marshal Arjuna was able to discuss the transcendental philosophy of Bhagavad-gītā even on the battlefield of Kurukṣetra. We modern men have no time to get into the details of the philosophy of Bhagavad-gītā, even in the midst of our much more ordinary daily duties. But just to teach us, Marshal Arjuna tried to understand the philosophy of Bhagavad-gītā at a time when a moment was virtually impossible to spare. All this he did for the sake of people like us, and he fought the battle with full vigor once he had understood the philosophy of Bhagavad-gītā.
Affinity for family relations, which Marshal Arjuna displayed overwhelmingly in the manner of the typical modern man, is the sign of our lack of transcendental knowledge. But attaining transcendental knowledge does not necessarily mean renouncing the duties of our ordinary life. After Arjuna had understood the spirit of the philosophy of Bhagavad-gītā, the Personality of Godhead, Śrī Kṛṣṇa, never advised him to give up his seemingly ordinary duties. On the contrary, Arjuna fought the battle with even greater energy and vigor after he had obtained the transcendental knowledge imparted by Śrī Kṛṣṇa. The real spirit we attain through transcendental knowledge is self-negation and the determination to render transcendental service unto the Personality of Godhead. The purport of Bhagavad-gītā is this and nothing else.
When Marshal Arjuna was unable to solve the problem posed to him by the impending battle of Kurukṣetra, he surrendered himself as a disciple to Śrī Kṛṣṇa in all submissiveness to hear his problem's solution. At the outset, the Personality of Godhead talked with Arjuna just as a friend talks with a friend. But such friendly discussions generally end in friendly—and fruitless—debate. Thus, Marshal Arjuna surrendered himself as the disciple of Śrī Kṛṣṇa, for a disciple cannot disobey the orders of his spiritual master. That is the relationship between a disciple and his master.
Śrī Kṛṣṇa, the Personality of Godhead, imparted to Marshal Arjuna the vitally important teachings of Bhagavad-gītā only when He saw that Arjuna had surrendered to Him without any vanity regarding his own erudition, and without any other reservation. It is very common for us, like Arjuna, to try to dissipate our disillusionments by our own devices, culled from our own mundane experience. This attempt to remove our daily bodily and mental difficulties is always misdirected. Unless one tries to solve his problems from the perspective of eternal varities, there cannot be any peace whatsoever, either in this life or in the life after death. That is the supreme teaching of Bhagavad-gītā.
This spiritual subject matter, which is transcendental to the hankerings of the material body and mind, is our supreme need. Unless we reach this transcendental plane of activities, we cannot achieve real peace. This spiritual, transcendental plane is the plane of eternal life, without which the material body and mind would have no existence. However, at present we do not possess any information of this eternal life, although we have much pride, even vanity, about our material knowledge.