Those who are faithless or hesitating, oh, they have no chance. They have no chance. Ajñaś ca. That hesitation is due to also ignorance. Ajñaś ca aśraddadhānaḥ. And ignorant and faithless. Saṁśayātmā, hesitating. Vinaśyati: "He is hopeless." Nāyaṁ lokaḥ asti na paraḥ na sukhaṁ saṁśayātmanaḥ (BG 4.40): "Anyone who is hesitating in accepting this principle of knowledge, or Kṛṣṇa consciousness, for him," nāyaṁ loko 'sti, "not even this material world will be happy. And what to speak of his next life." If he has no faith, then even in this material world he'll be unhappy.
The material world is unhappy. It is all already miserable. It will be more miserable. He'll feel always disturbed, miserable, faithless. So for a faithless, the situation is very precarious.
So here is an authoritative version in the authoritative book, Bhagavad-gītā. And spoken by the Lord Himself, Śrī Kṛṣṇa. And if we accept faithfully, with confidence that, "Here is an authority . . ." Just the same way that when I am purchasing a ticket from a recognized company . . . just like I am keeping my money in some bank, thousands of dollars. Why? With faith. With faith. They have created some faith. Otherwise, thousands and thousands of dollars are coming in the bank. Why? There is faith. Who knows? The bank may fail or may not pay. Because the money is out of my hand, now they may not pay it. It may be. But because I have faith, I am putting my money there. So faith is required.