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.