if you believe that Kṛṣṇa is the . . . or the Supreme Personality of Godhead is everything, and if you surrender, if you worship, then the whole thing, whole account, is closed in one second. But if you don't believe—"Oh, I want to see what is actually God is"—then you have to go by stages: first realization, this impersonal Brahman effulgence; then second realization, the Paramātmā; and then, in the third stage, you realize, "Oh, here is the Supreme Personality of Godhead." So that will take time.
So . . . but one has to continue. If one gives up the research work just after making a few steps' advance, oh, that will not help. One has to go on, go on with it with steadiness, that "What is God? I shall see." That is called jñānī, jijñāsu, philosopher, inquisitive.