There is no difficulty. And people are accepting it. As if just they were ready to accept this cult. This is our experience. Any of our students can be questioned why he has accepted this Kṛṣṇa consciousness movement. He'll explain. So although Kṛṣṇa consciousness movement is not a movement by any particular person, nation or religion, but still, because Kṛṣṇa appeared in India, Lord Caitanya appeared in India... And Lord Caitanya says that anyone who has taken birth as a human being in the land of Bhāratavarṣa must take the responsibility of spreading this Kṛṣṇa consciousness movement for the benefit of all world.
It is not a question of any personal religion or personal ambition or something manufactured by some imperfect sense enjoyer. It is authorized because Bhagavad-gītā is authorized. Bhagavad-gītā is accepted... First of all, He was, it was accepted by Arjuna in toto. Sarvam etad ṛtaṁ manye yad vadasi keśava (BG 10.14). "My dear Kṛṣṇa, whatever You are saying, I accept it in toto, without any interpretation, without any rejection." Somebody says, somebody may say, "Arjuna was Kṛṣṇa's friend. To praise Him, he might have said like that." No. Arjuna immediately gives evidence that "It is not that I am accepting but you are accepted as, as such by such great personalities as, like Vyāsadeva, Nārada, Asita." He gives authority. So that was five thousand years ago. Later on, all the ācāryas, Rāmānujācārya, Madhvācārya, Viṣṇu Svāmī, Nimbārka, even Śaṅkarācārya. We Vaiṣṇava ācāryas, they differ little with Śaṅkarācārya. Impersonalist and personalist. But Śaṅkarācārya even, even though he was impersonalist, he accepted Kṛṣṇa in his commentary on Bhagavad-gītā. Sai bhagavān svayaṁ kṛṣṇa. So Kṛṣṇa is accepted as the Supreme Personality of Godhead. There is no doubt about it. By all authorities. And Kṛṣṇa Himself says in the Bhagavad-gītā, mattaḥ parataraṁ nānyat (BG 7.7). "There is no more superior authority than Me."