So one has to know Kṛṣṇa in tattvataḥ, as He is.
So this tattvataḥ means accept the process of devotional service. Tattvataḥ, Kṛṣṇa as He is, cannot be understood by the other methods, namely by mental speculation or mystic yogic exercises. Kṛṣṇa cannot be understood in that way. If we want to understand Kṛṣṇa, then we have to accept the Kṛṣṇa method, bhakti method.
That is plainly spoken by Kṛṣṇa: bhaktyā mām abhijānāti (BG 18.55). Kṛṣṇa does not say that you can know Him by mental exercises or yogic practices. No. Yogī can know . . . tad-gata manasā paśyanti yaṁ yoginaḥ. Dhyānāvasthita-tad-gatena manasā paśyanti yaṁ yoginaḥ (SB 12.13.1). Yogī also, by meditation they see Kṛṣṇa. That is real yoga. As it is explained in the Bhagavad-gītā, the first-class yogī is he who always thinks of Kṛṣṇa within himself.
- yoginām api sarveṣāṁ
- mad-gatenāntar-ātmanā
- śraddhāvān bhajate yo māṁ
- sa me yuktatamo mataḥ
- (BG 6.47)
That is first-class yogī.
So you are thinking of Kṛṣṇa by chanting Hare Kṛṣṇa because the more you practice, immediately with your chanting, the name, the form, the quality, the pastimes, everything will be revealed. As we go on cleansing our dirty heart by chanting Hare Kṛṣṇa mantra, and as we chant faultless, offenseless harer nāma, Kṛṣṇa reveals. Sevonmukhe hi jihvādau svayam eva sphuraty adaḥ (Brs. 1.2.234). By service attitude, if you chant Hare Kṛṣṇa mantra without any offense, then Kṛṣṇa will reveal Himself.
You cannot try to see Kṛṣṇa by your speculation or yogic practice. If you simply submissively, surrendering yourself, chant His holy name . . . there is no difference between Kṛṣṇa's name and Kṛṣṇa. Abhinnatvān nāma-nāminoḥ (CC Madhya 17.133). People generally ask that what is the meaning of chanting this Hare Kṛṣṇa mantra. We explain, you know, chanting of Hare Kṛṣṇa mantra means immediately, directly associating with Kṛṣṇa.
One has to approach Kṛṣṇa by yogic practice or mental speculation for many, many births. Bahūnāṁ janmanām ante (BG 7.19). They can come to the conclusion that, "Here is Kṛṣṇa." Vāsudevaḥ sarvam iti. But if you take to this chanting of Hare Kṛṣṇa mantra without any offense, then immediately you contact Kṛṣṇa. You save so much time. Why should you wait for many, many births?