Lord Caitanya says that, "Every one of you become the spiritual master. Every one of you. Why one, two? Every one of you." "Oh, spiritual master is very difficult job." No. No difficult job. Caitanya Mahā . . . Āmāra ājñāya: "Just try to carry out My order. That's all. Then you become spiritual master." And if you interpolate, if you put something nonsense, rubbish, to show your so-called rascal's education, then it is spoiled. Immediately spoiled. And if you present as it is, then it is pure.
Sarpocchiṣṭa-payo yathā. Avaiṣṇava-mukhodgirṇaṁ pūtaṁ hari-kathāmṛtam (Hari-bhakti-vilāsa). Hari-kathā. This message of Bhagavad-gītā is hari-kathā. Hari means the Supreme Lord. His word. Therefore it is warned that "Do not try to hear this message of Hari, or the Supreme Lord, from rascal non-devotee. Do not try to hear." Why?
Sarpocchiṣṭa-payo yathā. Just like milk is very nutritious food, but if a little milk is touched by the tongue of a serpent, whole thing is spoiled. A serpent, a very thin tongue, if he touches the milk, oh, the whole milk is spoiled. So if we take such milk, "Oh, milk is very nice," no. Because it is touched by the serpent's lip, it should not be taken.
Similarly, any transcendental message, any Vedic literature, unless it is presented by a self-realized devotee, it is poison. You simply misunderstand the whole thing, and you do not get the benefit. Rather, you become a victim of misunderstanding.
Therefore this paramparā system, evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ (BG 4.2) "The Blessed Lord said that 'I said to Vivasvān. Vivasvān said to Ikṣvāku. Ikṣvāku said to Manu. Manu said to his son.' " In this way, rājarṣi. Rājarṣi. Formerly the kings were taken instructions, the head of the state, because they were responsible for the citizens' spiritual life, not only material prosperity but spiritual prosperity. That is the verdict of Vedic literature.
The father is responsible, the teacher is responsible, the king is responsible, the husband is responsible for development of spiritual life of their dependent. Bhāgavata says that, "If you cannot develop the spiritual life of your dependent, then don't become a spiritual master, don't become a teacher, don't become a father, don't become a husband." These things are restricted.
So it is very nice culture, this Vedic culture. Try to understand. And Bhagavad-gītā is the essence of such Vedic knowledge. And it is being spoken by the Supreme Personality of Godhead Himself, Kṛṣṇa. Try to understand it as it is, then your life will be sublime. You will feel joyful always. Ānandamayo 'bhyāsāt (Vedānta-sūtra 1.1.12). Abhyāsāt: "By nature we are joyful." But what is that nature? That spiritual nature, not this material nature. Material . . . Manaḥ ṣaṣṭhānīndriyāṇi prakṛti-sthāni karṣati (BG 15.7).
If we remain in the material nature, then our whole struggle for existence will continue. It will never stop. But if you take to the spiritual nature, Brahman nature, brahma-bhūtaḥ prasannātmā (BG 18.54), you immediately becomes joyful.