Sins committed out of lack of knowledge are not considered sins, since sin cannot be a sin if the one who committed it did not know it was wrong. Unintentional sins are considered less severe sins. Sins between people are considered much more serious in Judaism than sins between man and God. Yom Kippur, the main day of repentance in Judaism, can atone for sins between man and God, but not for sins between man and his fellow, that is until he has appeased his friend. Eleazar ben Azariah derived [this from the verse]: "From all your sins before God you shall be cleansed" (Book of Leviticus, 16:30) – for sins between man and God Yom Kippur atones, but for sins between man and his fellow Yom Kippur does not atone until he appeases his fellow. When the Temple yet stood in Jerusalem, people would offer Korbanot (sacrifices) for their misdeeds. The atoning aspect of korbanot is carefully circumscribed. For the most part, korbanot only expiate unintentional sins, that is, sins committed because a person forgot that this thing was a sin or by mistake. No atonement is needed for violations committed under duress or through lack of knowledge, and for the most part, korbanot cannot atone for a malicious, deliberate sin. In addition, korbanot have no expiating effect unless the person making the offering sincerely repents of his or her actions before making the offering, and makes restitution to any person who was harmed by the violation. Judaism teaches that all willful sin has consequences. The completely righteous suffer for their sins (by humiliation, poverty, and suffering that God sends them) in this world and receive their reward in the world to come. The in-between (not completely righteous or completely wicked), suffer for and repent their sins after death and thereafter join the righteous. The very evil do not repent even at the gates of hell. Such people prosper in this world to receive their reward for any good deed, but cannot be cleansed by and hence cannot leave gehinnom, because they do not or cannot repent. This world can therefore seem unjust where the righteous suffer, while the wicked prosper. Many great thinkers have contemplated this. Shinto The Shinto concept of sin is inexorably linked to concepts of purity and pollution. Shinto does not have a concept of original sin, instead believing that all human beings are born