How Kṛṣṇa will be understood then? Sevonmukhe hi jihvādau. If you engage your tongue in His service, then that is the recommendation of Vedic literature, that first of all you have to engage your tongue. Kṛṣṇa's service begins from the tongue, because tongue has got two functions, namely to vibrate, to speak something, and to taste something. So you engage. You simply engage your tongue for chanting and glorifying Kṛṣṇa, and eat prasādam, then the two tongue's business will be finished. Sevonmukhe. You eat Kṛṣṇa's prasādam.
- kṛṣṇa baro doyāmoy, koribāre jihwā jay,
- sva prasād-anna dilo bhāi
- sei prasādanno pāo, rādhā-kṛṣṇa-guṇa gāo
Bhaktivinoda Ṭhākura has taught that our tongue is very fastidious, wants to eat this thing, that thing, this thing, that thing. Even after . . . we have seen: he has eaten sumptuously at home, but as soon as he comes out, "Let us go to the restaurant. Let us have a cup of tea, a little this or that." The tongue is always dictating, "You eat this, you eat that, you eat that, you like that." That is going on. So if you want to control your tongue, then give him Kṛṣṇa prasādam that, "I'll not accept anything which is not offered to Kṛṣṇa." Then your tongue becomes controlled. And if you can control your tongue, your other senses will be automatically controlled. And yogic perfection means controlling the senses. Yoga indriya-samyamaḥ.