This is civilization, varṇāśrama. One must observe, the material world. In the spiritual world, of course, there is no such thing as varṇāśrama. That is pure identity of the soul. So there is no . . . so long we are in this material world there must be a scientific division of progress of life. That is Vedic system. Brāhmaṇa, kṣatriya, vaiśya, śūdra, brahmacārī, gṛhastha, vānaprastha, sannyāsa. This is called varṇāśrama-dharma. I have repeatedly said that people call us Hindu in India. Actually, "Hindu" word is not visible in any Vedic literature. This is the name given by the Arabians to the . . . this part of the world, on the bank of the Sindhu. From the "Sindhu" the word "Hindu" has come. So actually, our culture is varṇāśrama-dharma. Therefore śāstra says, varṇāśramācāravatā puruṣeṇa paraḥ pumān (CC Madhya 8.58). In the varṇāśrama-dharma, the ultimate goal is to worship Lord Viṣṇu, whose name is Yajña. Out of many names of Lord Viṣṇu, one name is Yajña, Yajña-puruṣa. So yajña, to . . . anything performed to satisfy the Supreme Lord, that is called yajña.
So other yajñas are not possible in this age, Kali-yuga, Kali-yuga. The only yajña: this saṅkīrtana movement. Yajñaiḥ saṅkīrtana-prāyair yajanti hi su-medhasaḥ (SB 11.5.32). If you want to perform yajña and if you are intelligent, su-medhasaḥ . . . the two words has been used in Vedic literature: su-medhasaḥ and alpa-medhasaḥ. In the Bhagavad-gītā this word has been used, alpa-medhasaḥ, tad bhavati alpa-medhasām, in the matter of worshiping the demigods. Kāmais tais tair hṛta-jñānāḥ yajante anya-devatāḥ (BG 7.20). Antavat tu phalaṁ teṣām (BG 7.23). If you get some resultant action by worshiping demigod, that is antavat. Just like Hiraṇyakaśipu: he got some benediction from Lord Brahmā. Lord Brahmā is not ordinary demigod. He's the . . . amongst the demigods he's the head, pitāmaha. So Hiraṇyakaśipu wanted benediction from Lord Brahmā to become immortal. So immortality is not possible. So Lord Brahmā said that, "My myself . . . I am myself not immortal. How can I give you? It is not possible." So Hiraṇyakaśipu took indirectly, negative way that, "I shall not die this way, I shall not die this way, I shall not die this way," negative way. So he thought himself to be very intelligent demon. So even that benediction was given, but still, he was killed by Nṛsiṁha-deva.
So therefore, antavat tu phalaṁ teṣām. Even by tricks or by penance or austerities you take some benediction from the demigods, even if you are awarded, that is described in the Bhagavad-gītā, antavat tu phalaṁ teṣāṁ tad bhavaty alpa-medhasām (BG 7.23). People want to be satisfied with little benefit. With little benefit. No, that is not our mission. We want the supreme benefit. Supreme benefit is that you are now entangled in the process of birth, death, old age and disease in the material existence. The real benefit is how to save yourself from these four difficulties. As Kṛṣṇa says in the Bhagavad-gītā, janma mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam (BG 13.9). We are embarrassed with so many difficulties, but real difficulty is janma-mṛtyu-jarā-vyādhi: birth, death, old age and disease. So this Kṛṣṇa consciousness movement is to give you ultimate benefit: no more birth, no more death, no more disease, no more old age. Always mind that.
So the greatest benefit. The greatest benefit is . . . Caitanya Mahāprabhu is offering. Therefore Rūpa Gosvāmī says, namo mahā-vadānyāya kṛṣṇa-prema pradāya te (CC Madhya 19.53). This greatest benefit you can get if you develop your dormant love for Kṛṣṇa.