Sinful activities must be there. We are put into certain condition; therefore it is called conditional life. Suppose you are very pious man. You are not killing any man or any cow—we are very careful—but still you have to kill. What is that? Because we are walking on the street, you have seen, you are killing so many ants. The position is like that. Even if you do not wish to kill, even if you are very pious man, still you have to kill, unconsciously or consciously. The world situation is like that. Anyone who has come here, he must commit sinful activities. As soon as you get this material body, then you must have to commit sinful activities, even if you are very careful. It is not possible. Therefore śāstra says, padaṁ padaṁ yad vipadām (SB 10.14.58): "Every step there is vipada." You cannot be excused. Because you are killing one ant unconsciously while walking, your name is noted. Your ticket is immediately there: "Oh, you have killed so many ants." The law is so nice. Prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi (BG 3.27). Automatically it is recorded, automatically, and you have to suffer.
So then what to do? If the situation is like that, how to save? Therefore Kṛṣṇa says, yajñārthe karmaṇa anyatra karma-bandhanaḥ (BG 3.9). If you dedicate your life for yajña . . . yajña means for Viṣṇu. Yajñārthe karma means . . . yajña-puruṣa is Viṣṇu. If you work for Viṣṇu, then you are safe. Otherwise you are becoming complicated. Yajñārthe. Kṛṣṇa says, yajñārthe karma anyatra karma-bandhanaḥ. If you are going to office to earn your bread, very hurriedly to attend the office, and you are killing so many ants, you are becoming entangled. You think, "I am going to office to do my duty very hurriedly," but you are becoming implicated. But if you go out for receiving some help for worshiping Viṣṇu, then you are free. Then you are free. Exactly like that: a soldier who is fighting in the battlefield and killing so many men and he is given gold medal, "Oh, you have killed so many. So many lives you have killed of the opposite party, enemy. You take this Victoria Cross." He becomes recognized by the government. The same man, when he comes home, if he kills somebody for his sense gratification, he will be hanged. The same man. The same soldier, when he is fighting for king's service, government service, government is supplying him food, everything—"So fight very chivalrously"—and offering him gold medal. And the same men, when he comes home, for his sense gratification if he kills a man, he will be hanged. He may say in the court, "Sir, I have killed so many men in the battlefield and I was never hanged. I was given gold medal. And now I have killed only one man, and I am going to be killed? Why? What is this?" "Yes." For your sense gratification as soon as you do anything, that is sinful, whatever you do. It may be so-called pious activities in your calculation, but in this material world there is no such thing as pious activities or impious. Everything impious.