RAJA-VIDYA: The King Of Knowledge:
Chapter Four. Knowledge by Way of the Mahātmās, Great Souls:
By His Divine Grace A.C. Bhaktivedanta Swami Prabhupada:
Understanding Kṛṣṇa to be the primal source of everything, how do the great souls act? Kṛṣṇa Himself characterizes them in this way:
satataṁ kīrtayanto māṁ
yatantaś ca dṛḍha-vratāḥ
namasyantaś ca māṁ bhaktyā
“Always chanting My glories, endeavoring with great determination, bowing down before Me, these great souls perpetually worship Me with devotion.” (Bg. 9.14)
That glorification is this process of bhakti-yoga, the chanting of Hare Kṛṣṇa. The great souls, understanding the nature of God, His descent and His mission, glorify Him in so many ways, but there are others who do not accept Him. Kṛṣṇa also mentions them in the Ninth Chapter:
avajānanti māṁ mūḍhā
mānuṣīṁ tanum āśritam
paraṁ bhāvam ajānanto
“Fools deride Me when I descend in the human form. They do not know My transcendental nature and my supreme dominion over all that be.” (Bg. 9.11)
The mūḍhas, or foolish men, who are lower than the animals, deride Him. Any person who doesn’t believe in God must either be a madman or fool number one. There is no reason not to believe in God, and there is every reason to believe in Him. Man may say that he doesn’t believe in God, but who gives him the power to say this? When death comes, this speaking power ceases—so who is giving the power of speech? Has the speaking power come automatically from stone? As soon as the speaking power is withdrawn by the Supreme Authority, the body is no better than stone. The very power of speech is proof that there is a Supreme Power who is giving us everything. A Kṛṣṇa conscious person knows that whatever he has is not under his control. If we do not believe in God, we must believe in some power beyond us which is controlling us at every step, call that power God or nature or whatever. There is a controlling power in the universe, and no sane man can deny it.
Kṛṣṇa was present on this earth and appeared just like a human being with supernatural power. At that time, however, ninety-nine percent of the people could not recognize Him as God. They could not recognize Him because they had no eyes to see (paraṁ bhāvam ajānantaḥ). How is it possible to recognize God? He can be recognized through supernatural power, by the evidence of authorities, and by scriptural evidence. As far as Kṛṣṇa is concerned, every Vedic authority has accepted Him as God. When He was present on earth, His activities displayed were superhuman. If one does not believe this, it is to be concluded that he will not believe whatever evidence is given.