Kṛṣṇa is addressed by Arjuna, pavitram. In the Upaniṣad it is said, Īśopaniṣad, apāpa-viddham (ISO 8). God cannot be infected by sinful activities. That is God's . . . just like we are infected by sinful activities, God is not like that. There is Absolute. So He is always pure. So we have to make ourselves purified before we can approach the Supreme Personality of Godhead.
So these are sinful activities: illicit sex life and meat-eating, unnecessarily killing the animals. Why should you kill animals? If God has given you so many nice foodstuffs—varieties of fruit, varieties of grain, sufficient milk—why should you take to this obnoxious foodstuff? But it is ill luck, unfortunate. By ill association they'll learned all this nonsense. So therefore one has to give up these nonsense habits. That is called tapasya. Tapo divyam.
Why tapasya? Divyam: for spiritual realization. Why it is necessary? Tapo divyaṁ yena śuddhyet sattva. Your existence will be purified, because . . . just like in diseased condition we cannot relish very palatable foodstuff. A man, jaundice, suffering from jaundice, if you give him something just like candy, sugar candy, he'll taste it as bitter because he is suffering from jaundice. But sugar candy is not bitter. Similarly, in our diseased condition, this material body, actually you cannot taste real happiness. That is not possible. Therefore we have to cure the disease.
Bhagavad-gītā therefore says curing the disease means janma-mṛtyu-jarā-vyādhi-doṣa . . . kleśa-doṣānudarśanam (BG 13.9). Those who are actually advancing in spiritual life, they should always keep in front that, "We may advance in so many things, but these four things—birth, death, old age and disease—cannot be solved by our so-called material advancement of science." And Bhagavad-gītā points out that you should always keep these four principles of misery in front. Then you'll be able to advance in spiritual path.
And if you become callous—"Oh, death takes place. What is that?"—why you should die? You are not subjected to death. Na hanyate hanyamāne śarīre (BG 2.20). Even after the destruction of this body you do not die. "Then why should I accept this material body?" This is intelligence. This is science. "I do not want to be old. Why I become old?" Nityaḥ śāśvato 'yam. Because the living entity is eternal, so why he should become old? Kṛṣṇa never becomes old. Kṛṣṇa's picture you have never seen old. Similarly, you also cannot become old.
So these questions do not arise. They are simply, I mean to say, engrossed with animal propensities—eating, sleeping, mating and defending—as if these are the problems. These are no problems. We have created these problems. Eating is no problem. The animals, they do not endeavor for doing some work for eating. Eating is already there.
The birds, beasts are eating. Similarly, human body, eating is there. For example, we are, these forty heads, we are traveling. So eating is already there. Before our coming, our Padubhai has arranged for our eating. So why should we think for eating? (laughter)
So . . . but actually that is the fact. There is no problem of eating. They have created this problem. God has given enough food. In America they throw away foodstuff in the ocean. You see? This is nonsense. Because they have no Kṛṣṇa consciousness, they do not know that these food grains belong to Kṛṣṇa. He has sent. So instead of throwing in the ocean, it should be dispatched to the countries where there is scarcity.