The sin offering / קרבן חטאת
This Korban is obligation to bring when you sin accidentally. However if your sin is on purpose there is no way to make it up even with a korban. Rashi explains: one only brings the korban chat at for violating a mitzvah lo te'aseh that had you done it on purpose you would get kareit (excommunication from the jewish community). the torah tells us when to bring a korban chatat in the following pasuk: דבר אל בנ׳׳י לאמר נפש כי תחטא בשגגה מכל מצות ה׳ אשר לא תעשינה ועשה מאחת מהנה: