One who is, I mean to say, has gotten, who has gotten a little favor of Kṛṣṇa, God, he can understand. Athāpi te deva padāmbuja-dvaya-prasāda, one who has got little mercy of the lotus feet of Kṛṣṇa, athāpi te deva padāmbuja-dvaya-prasāda-leśa, little mercy, jānāti tattvam, he can understand what is God. Little favor; not all favor, a little. Others, ciraṁ vicinvan, they may go on speculating, imagining what is God, "God may be like this," "God may be like that," "God may be like that." So in that way, ciraṁ vicinvan, for many, many millions of years, if one thinks like that, he cannot understand.
Therefore Kṛṣṇa comes Himself, and He manifests His pastimes in Vṛndāvana as cowherd boy—how He is playing with His friends, how He is dealing with Rādhārāṇī, how He is dealing with His parents. Everything is manifested practically just like ordinary human being. But at the same time, whenever there is need, big, big demons, beginning from Pūtanā, when He was only a few months old, He is maintaining His position as God, but dealing with His devotees. This father and mother and friends, lover, all in Vṛndāvana, who are they? They are expansion of Kṛṣṇa. That story we have got in the Kṛṣṇa book, that Brahmā stolen all the cows and calves and cowherd boys. Stolen, and Kṛṣṇa immediately created another set. Then Brahmā understood that "Here is the Supreme Lord, my master." So these Kṛṣṇa's associates, they are all also Kṛṣṇa, expansion of Kṛṣṇa. Ānanda-cinmaya-rasa-pratibhāvitābhis tābhir ya eva nija-rūpatayā kalābhiḥ (Bs. 5.37). We are also expansion of Kṛṣṇa. We living entities, Kṛṣṇa says in the Bhāgavata, mamaivāṁśo, part and parcel.
So samagram, one has to understand actually what is Kṛṣṇa in complete. If you want to that, know that, then this is the process, mayi, mayi āsakta-manaḥ, mayy āsakta-manaḥ (BG 7.1), the mind has to be engaged in Kṛṣṇa, first thing is. Mind. Therefore, Kṛṣṇa manifests Himself in this Deity form. The Deity is Kṛṣṇa Himself. But we cannot concentrate Kṛṣṇa which is not visible. Kṛṣṇa is not visible to the ordinary eyes. Ataḥ śrī-kṛṣṇa na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). God is not perceptible with our this material eyes, our material senses. Ataḥ śrī-kṛṣṇa-nāmādi na . . . even material ears. You are chanting. If you are not spiritually advanced, this chanting of Hare Kṛṣṇa mantra also will not appeal. It will be happening mechanically. But by chanting you will gradually advance, ceto-darpaṇa-mārjanam, then you will understand that this Hare Kṛṣṇa mantra is not different from Kṛṣṇa. The mantra, the sound vibration, is also Kṛṣṇa.
So we have to, I mean to say, repose our mind to the form of Kṛṣṇa. Kṛṣṇa says mayi, "Unto Me, Kṛṣṇa." We cannot see now Kṛṣṇa personally. Personally He is here, but we want to see anything physically. Physically He is also there. Here, Kṛṣṇa mūrti is physical, but because you are differently educated, you do not know what is this world of physics. We think that this is different from Kṛṣṇa. That will be explained. Therefore it is said, tac chṛṇu. Asaṁśayaṁ samagraṁ māṁ yathā jñāsyasi tac chṛṇu. "You just hear from Me, as you can understand Me in complete, without any doubt." So Kṛṣṇa is instructing Himself, about Himself. So why there should be any doubt? There cannot be any doubt. God is explaining Himself about Him, then why there should be doubt? This is the . . . this is called bhakti-yoga. Mad-āśrayaḥ. Mayy āsakta-manāḥ pārtha.
So how you can engage your mind in the Supreme Personality of Godhead if you do not know the form? Therefore Kṛṣṇa comes in His original form. Yadā yadā hi dharmasya glānir bhavati bhārata tadātmānaṁ sṛjāmy aham (BG 4.7). When people forget or become engaged otherwise, rascaldom, duṣkṛtinaḥ, at that time He comes. He comes Himself or sends His representative to make this rascal know that, "Here is Kṛṣṇa." Tadātmānaṁ sṛjāmy aham. In the form of name, in the form of Deity, in the form of picture, in the . . . so many ways. If you think of Kṛṣṇa within yourself, that "Kṛṣṇa is like this, Kṛṣṇa's leg is like this, Kṛṣṇa's flute is like this, Kṛṣṇa's hand is like this, mouth is like this, He is dressed like this," this meditation is perfect meditation—not imagination—so that your mind will be gradually absorbed in Kṛṣṇa.