LEV46 Bring an offering when perhaps one committed a sin whose intentional violation is punishable by kares. A person always must be alert and on guard that he does not violate the Torah. He must be deliberate in all of his actions, and when he fails in this regard and a doubt arises, perhaps he sinned, he needs atonement for his carelessness. Even if it is determined that he did not violate the Torah, he is guilty of carelessness. Clearly, the offering that he brings to atone for carelessness does not suffice if he actually committed the sin, so if it turns out that his fears were justified and he did commit the sin, he must bring a sin offering (chatas) to attain atonement.