So keeping faith on Kṛṣṇa or to His bona fide representative is the same thing. So that śraddhāvān, if you follow, saṁyatendriya, with controlled senses, then your result is guaranteed, and you'll feel it.
How you'll feel it? Just like you are hungry and if you are given some food, foodstuff and you eat it, and as you eat it, you feel that "Yes, I am feeling satisfaction," so you'll feel it. You won't have to ask anybody that, "Whether I am making progress or not?" You yourself will feel it. Acireṇa. Acireṇa śāntim adhi . . . you will feel full peace, acireṇa, very soon.
Then ajñaś cāśraddadhānaś ca saṁśayātmā vinaśyati. And 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.
Where? Authority. Here is authority. Why are you putting our money in the bank? Because you have got faith. We have confidence that, "This bank will not fail." Similarly, if we can keep our faith in an ordinary bank or a traveling agent, can we not keep our faith Kṛṣṇa, who is accepted as the Supreme Personality of Godhead by all other big authorities, even by Śaṅkarācārya, Rāmānujācārya, Lord Caitanya and all these?
So we have to follow the footprints of great authorities. Mahājano yena gataḥ sa panthāḥ (CC Madhya 17.186). He'll be situat . . . just like we also follow others. Just like if I put some money in a bank, I see, "So many people are keeping their money. So I may also keep." So if Kṛṣṇa has been accepted as the supreme authority by so many big, big men, why should we not keep our faith in Kṛṣṇa? Or Jesus Christ? That's all right. We must keep our faith, and faithfully we shall discharge our duties. And if we follow that principle, the result is guaranteed.