The yogīs, they try to find out by samādhi the Supreme Person within the heart. Dhyānāvasthita-tad-gatena manasā paśyanti yaṁ yoginaḥ (SB 12.13.1). Yogī's, yogī's business is dhyānāvasthita, in meditation, in full samādhi, he is seeing the Supreme Personality of Godhead, four-handed Nārāyaṇa. Viṣṇu-devānanda. Ānanda. They are taking pleasure by seeing Viṣṇu within the heart. Viṣṇu is within your heart. Īśvaraḥ sarva-bhūtānāṁ hṛd-deśe arjuna tiṣṭhati (BG 18.61). The Supreme Person in His Paramātmā feature, localized feature, He is existing in everyone's heart.
So yogī, the ultimate yogī, ultimate yoga process is to be situated in samādhi. Samādhi. Samādhi means forgetting everything external, simply concentrating on the form of Viṣṇu. Therefore this is said:
- yaṁ brahmā varuṇendra-rudra-marutaḥ stunvanti divyaiḥ stavair
- vedaiḥ sāṅga-pada-kramopaniṣadair gāyanti yaṁ sāma-gāḥ
- dhyānāvasthita-tad-gatena manasa paśyanti yaṁ yoginaḥ
- (SB 12.13.1)
Dhyānāvasthita, in full samādhi, in meditation, the yogīs, they see the Supreme Personality of Godhead. This is the yogī. And out of all those yogīs, the Kṛṣṇa form . . . Kṛṣṇa has got many forms. Advaita acyuta anādi ananta-rūpam ādyaṁ purāṇa-puruṣaṁ nava-yauvanaṁ ca (Bs. 5.33). Ādyaṁ purāṇa-puruṣam. Kṛṣṇa has multiforms. He is the Yogeśvara.
The yogīs, they can also sometimes expand to many-fold forms. There is only one instance in the śāstra. There was a Saubhari Muni. He was a great yogī. He expanded himself to eight forms. So yogīs, they can. But if a yogī can expand himself into eight or, say, several forms, how much potency is there in the yogeśvara. Kṛṣṇa is called yoge . . . yatra yogeśvaro hariḥ. Yogeśvara (BG 18.78). He is the master of all mystic powers, Yogeśvara. So He can expand Himself in many forms, multiforms. That is explained. Advaita acyuta anādi ananta-rūpam. Ananta-rūpam. Ādyam: but He is the original person. Purāṇa-puruṣam: the oldest person, because He is the original. Nava-yauvanaṁ ca: but still young man.
You have seen the picture of Kṛṣṇa. You will never see Kṛṣṇa as old man. When Kṛṣṇa was in the Battlefield of Kurukṣetra . . . you have seen the picture: Kṛṣṇa is driving the chariot of Arjuna. At that time His age was not less than hundred years. He had great-grandchildren. But you have seen the picture. He was looking like a boy of sixteen to twenty years. Therefore Kṛṣṇa is described in the Vedic literatures as nava-yauvanaṁ ca. Kṛṣṇa's body . . . therefore His body is spiritual body. The spiritual . . . when you get your spiritual body, you also get nava-yauvanam. Those who are associating with Kṛṣṇa in the Kṛṣṇa planet or those who are associating with Nārāyaṇa in the Vaikuṇṭha planets, they are also ever-young. Their bodily features are exactly like Nārāyaṇa. It is called sārūpya-mukti.
So this Kṛṣṇa consciousness movement is a great science of understanding what is God. Simply with vague idea, "There is God," that is not sufficient. That is good, simply to understand, "There is God." Generally, they do not believe that there is God. But if somebody says: "Yes, there is God, but I have no business with Him," no. You should know God, actually what is His name, what does He do, where is His residence, what is His business. You should know this. And these things are possible to understand in this human form of life.