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."