Every incarnation is mentioned in the Vedic scripture, when and how, what kind of work he will do, and what place, which place, and everything in detail is there so that there is chart of the incarnation. Nobody can become an incarnation beyond that chart. There is chart. Just like there will be an incarnation of Kalki, I have several times spoken before you, which will take place about four millions of years later on. Still, His name is mentioned in the Bhāgavata, and the place is also mentioned. His father's name is also mentioned. This is called incarnation.
So Lord comes as incarnation for these two purposes: to protect the saintly persons and to annihilate the atheistic demons, and to establish the real purpose of religion. Now, the point was that what is the real purpose of religion? That real purpose of religion, now, Kṛṣṇa said that "I descend for establishing the purpose of religion." Yadā yadā hi dharmasya glānir bhavati, dharma-saṁsthāpanārthāya (BG 4.7). Paritrāṇāya sādhūnāṁ vināśāya ca duṣkṛtām (BG 4.8).
Duṣkṛtām. These two things. And the third thing is dharma-saṁsthāpanārthāya: and for the purpose of establishing the principle of religion. Now, in the last word He says that sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66), that "You give up all kinds of religion that you have manufactured. You simply surrender unto Me." So religious principle means to surrender unto God and nothing more. But that's all. That is the real principle of religion. Religion without God consciousness, that is no religion, at least according to Bhagavad-gītā.
Without God consciousness, without establishing my relationship with the Supreme Lord, there cannot be any religious principle. You may go on advertising some new kind of religious principle, and every day and every moment they are being manufactured in all over the world, and there are so many groups of religious principle, but here, according to Bhagavad-gītā, real religious principle means to establish your lost relationship with the Supreme Lord.
We are eternally related with the Supreme Lord, just like the father and the son is eternally related. That relation cannot be cut off. A father may become . . . a son may become rebellious to his father, but he cannot say that "He is not my father." Is it possible? No, that is not possible. How can it be possible? I may disagree with my father in so many points of view, but if somebody asks you, "Who is your father?"