Bhāgavata is trying to inform you about Kṛṣṇa, beginning janmādy asya (SB 1.1.1), oṁ namo bhagavate vāsudevāya. Vāsudeva Kṛṣṇa, svayaṁ bhagavān. Now, what kind of Vāsudeva? Janmādy asya yataḥ: from whom everything is there. What is that everything? Means birth, sustenance and death. Everything we can understand, any material object we can understand by these three symptoms. Just like your body, my body, or everyone's body: it has got a date of birth, it continues to live for some time, and there is end. That is called janmādy asya (SB 1.1.1). Janma ādi asya. First of all birth, then sustenance, then death. This is three summary.
But actually there are six. Six . . . in the birth, then living for some time, then growth, then producing something out of the body, then dwindling, then finished. Every body. Everybody takes birth, then remains for some time, grows also or changes different body, and then from the body some other bodies are also come out. In this way one becomes old; that means dwindling. And one day will come he'll be finished. Ṣaḍ-vikāra. These are called six kinds of transformation. Any material thing we can take: six kinds of transformation. But Kṛṣṇa has not such transformation. Therefore He is not of this body. His body is mentioned in the śāstra, sac-cid-ānanda-vigraha (Bs. 5.1).
So anyone accepting Kṛṣṇa like ordinary man, then he's a rascal. Avajānanti māṁ mūḍhā mānuṣīṁ tanum āśritam (BG 9.11). Kṛṣṇa says: "The rascal only, they take Me as a human being." Just like a great rascal scholar, he has mentioned: "Perhaps Kṛṣṇa was the leader of an aborigine, and He has been accepted as God." You see? So we cannot study Kṛṣṇa in that way, from the fools and rascals. We have to know Kṛṣṇa from authorities.