Sarva-kāraṇa-kāraṇam. And Kṛṣṇa also says, mattaḥ parataraṁ kiñcid asti, kiñcid asti dhanañjaya. "There is no more." Everyone is cause. You are . . . you are . . . your cause . . . your cause for appearance is your father. The cause of your father's appearance is his father. You go on—father, father, father, father—you reach Brahmā, who is called the supreme forefather. Then Brahmā is also born of Viṣṇu, Garbhodakaśāyī Viṣṇu. And the Garbhodakaśayī is also appeared from Kāraṇodakaśāyī Viṣṇu. In this way, go on, go on. And Saṅkarṣaṇa, Nārāyaṇa, Pradyumna, Aniruddha—there are so many. And at last you reach Kṛṣṇa. Therefore Kṛṣṇa is the cause of all causes.
So Kṛṣṇa's name is there, God's name is there, God's address is there, and how to reach God, the process is there. Then why you'll not utilize this? What is the reason? Why you say, "Can you show me God? Is there any God?" Why do you say like this? What is the reason? Everything, information, is there, and still you say, "Can you show me God?" "Who is God?" "There is no God," "God is dead." Why do you talk like that? If you say that "How we can understand that Kṛṣṇa is the Supreme Lord?" then you have to approach authorities. Just like if you want to purchase some diamonds, you cannot understand whether it is diamond, but you go to a jeweler and he'll say yes or no: "Yes, it is real."
So you have to go to the authorities. Who are the authorities? At least, in our country. Not only in . . . all countries. So our authorities, the whole Vedic civilization is going on under the authorities of ācārya. They are coming by disciplic succession: Śaṅkarācārya, Rāmānujācārya, Madhvācārya, Viṣṇu Svāmī, Lord Caitanya—there are so many authorized ācāryas. What is their opinion?
Their opinion: krsnas tu bhagavan svayam (SB 1.3.28). The śāstra is there, the authoritative statement is there, and the activities are there. Then what reason you have got not to believe that Kṛṣṇa is not God? What reason you have got? Here is God. And those who are devotees of Kṛṣṇa, actually see their life, how they are advanced in God consciousness, or Kṛṣṇa consciousness.