Just like if I offer you that if you do this work, I shall give you immediately fifty thousand rupees. So who will believe me? "This man is a beggar, sannyasi, how he'll give fifty thousand rupees?" So there is no sraddha. But we cannot do so with reference to Krsna. When Krsna says, aham tvam sarva-papebhyo moksayisyami (BG 18.66), that is a fact. That is not a bogus promise. Because Krsna is the Supreme Personality of Godhead, all-powerful, whatever He likes, He can do. This is called faith.
So after reading Bhagavad-gita, if one does not get this faith in Krsna, then it is useless waste of time. That's all. There are many so-called scholars, politicians, they declare that "I read Bhagavad-gita daily, three times," but the result is no faith in Krsna. This is called useless waste of time. If you do not get the faith which is required by studying Bhagavad... Bhagavad-gita is the ABCD reading for understanding God. That is ABC. So if you do not understand even the ABCD, how he'll advance in higher studies? That is not possible. So even we cannot understand Bhagavad-gita, the ABCD, Krsna says one thing, and they make, I mean to say, interpretation in a different way. Krsna says, aham adir hi devanam (BG 10.2), mattah sarvam pravartate (BG 10.8). They do not believe it. Srama eva hi kevalam (SB 1.2.8).