In Bhagavad-gītā Arjuna says, after understanding Bhagavad-gītā from Kṛṣṇa, he said, "Kṛṣṇa, You are Parabrahma." Paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān (BG 10.12). Bhavān. Bhavān means "Your Lordship." "You are Parabrahma, the Supreme Brahman." He's Supreme Brahman. Brahma means spirit, and brahma means the greatest. So he has explicitly explained that spirit soul . . . we are all spirit soul, every one of us, but He is the supreme spirit soul, param. Param means the supreme. He's not ordinary. So He comes as ordinary—not ordinary; as human being—but He's the supreme human being. That is the difference. Supreme human being. But one who cannot understand, one who thinks, "Well, Kṛṣṇa is like us. He has got also two hands, two legs, one head. We have got also. He is like me," he is a mūḍha, rascal. Therefore it is said in the Bhagavad-gītā, avajānanti māṁ mūḍhāḥ (BG 9.11): "These rascal fools, they deride." Mānuṣīṁ tanum āś . . . paraṁ bhāvam ajānantaḥ, "They have no knowledge of the paraṁ bhāvam."
So the paraṁ bhāvam, that is understood by the devotee. That is the difference. Budhā bhāva-samanvitāḥ, Kṛṣṇa has said. Budhā bhāva-samanvitāḥ (BG 10.8). Paraṁ bhāvam, this bhāva . . . bhāva means assimilation—"Oh, Kṛṣṇa is so great." This is called bhāva. That is real understanding, when you understand really this bhāva stage. Bhāva-bhakti. Bhāva-bhakti. Simply engaged in Kṛṣṇa's service. Paraṁ bhāvam. Persons who has not come to this stage of bhāva, he cannot understand Kṛṣṇa. Paraṁ bhāvam ajānantaḥ. The bhāva stage comes. Everyone can attain that bhāva stage. There is process. This process is described by Rūpa Gosvāmī how to come to the bhāva stage. Bhāva stage means just prior to perfection. One must come to the bhāva stage; next stage is perfection. Next stage is full perfection.
So how to come to this bhāva stage, that is Rūpa Gosvāmī has described: ādau śraddhā (Bhakti-rasāmṛta-sindhu 1.4.15). First of all little faith. Just like many outsider also come here, "What these people are doing, these Kṛṣṇa consciousness men? So let us see." So śraddhā. That is called śraddhā. Śraddhā, real śraddhā means complete faith. That is described by Caitanya-caritāmṛta. Śraddhā-śabde viśvāsa sudṛḍha niścaya (CC Madhya 22.62). One who has got this much faith, strong faith, that Kṛṣṇa is the Supreme Personality of Godhead. This faith, not flickering; firm faith, "Yes, Kṛṣṇa is the Supreme Personality . . ." That is called śraddhā. That is beginning of śraddhā. If you have got still doubt, then you have not come to the stage of śraddhā even. Superfluous. You may come, but when you actually believe that "Kṛṣṇa is the Supreme Personality of Godhead, and if I engage myself in Kṛṣṇa's service, I am perfect"—two things—that is śraddhā. And the more you increase this śraddhā you become advanced. The beginning is this śraddhā. Ādau śraddhā.