An action which breaks a law or, alternatively, the failure to observe a positive Commandment. In Judaism, emphasis is placed on acts of commission or omission which go against the Divine law rather than on the theological concept of sin. In every case, the sinner is morally accountable to God, both for sins against man and for infractions of ritual law.
Nearly 30 different words are used in the Bible to refer to all kinds of sins; of these, three are primary. The most important word is ḥet; with its numerous verbal and nominal variations, ḥet occurs nearly 600 times in the Hebrew Bible. The root meaning of the word is "to miss the mark." While the word ḥet and its derivatives apply to all kinds of sin---social and ritual, deliberate and unwitting---it is the only term which describes the least offensive category of sin: an unwitting transgression of the ritual law.
The second most prevalent term, with all its variations, is avon. Usually translated as "iniquity," it implies a sin which is far more deliberate and outrageous than ḥet. Although it is occasionally used in reference to ritual sin, it is most frequently connected with punishable crimes against the social law and ethic, e.g., acts of injustice, lawlessness, or perversion.
The third term is pesha. The usual translation of its verbal form is "to transgress," but "to rebel" is more accurate. It implies a more serious offense than avon and is different from the simple meaning of ḥet. Thus, "For he adds transgression [pesha] unto his sin [ḥet]" (Job, 34:37). Pesha is never used to refer explicitly to a ritual sin. According to R. David Kimḥi, it always implies "a willful departure from the authority of the master or from the one who has given the command." In the framework of a religious concept, pesha usually denotes a deliberate rebellion against God by transgressing His law.
In rabbinic writings the three terms are used in the above order to describe the comprehensive character of sin (Yoma 36b). Every sin includes some element of each of the three categories: "missing of the mark" (ḥet) with respect to the highest ideal; a deviation (avon) from the right and lawful way; and an act of rebellion (pesha) against the authority of the law and the lawgiver. In rabbinic theology some sins are, however, more serious than others. For example, sins of commission are more serious than sins of omission. Those sins which go against the law of the Torah are weightier than infractions of rabbinic law. The most serious offenses are idolatry, murder, and incest; a person should be prepared to die rather than commit any of these.
Rabbinic literature also uses the term averah to connote a sin. The word means, literally, "a transgression" and generally points to a sin of commission, whether against a ritual or a social law.
In general, Judaism adopts a pragmatic attitude to human failings and the remedy for a breach of the law is largely practical, e.g., the bringing of a sin offering, restitution, and Atonement. In this system of practical religion little is said about the origin of sin, or about any difference in man before and after Adam's sin. Accordingly, there is no significant recognition in Judaism of the effect of man's first sin on his descendants. In spite of a few ambiguous references, mainly in ḥasidic and kabbalistic literature, the mainstream of classical Judaism clearly rejects any suggestion that sinfulness in human nature is a legacy from Adam's "original sin." The assertion that God will "visit the iniquities of the fathers upon the children" (Ex. 20:5) is not taken as a theological statement of the inevitable transmission of sin from generation to generation. In fact, it does not actually teach that children will be punished for the sins of the fathers but refers to a situation in which the children are also "them that hate Me." The doctrine of individual responsibility that is expounded in Deuteronomy 24:16 and Ezekiel 18:1-4 is central in Judaism.
Whenever the rabbis attempted to trace the psychological origin of sin, they ascribed it to the yetser ha-ra, the "evil inclination" that is innate to human nature. This approach to the "psychology of sin" is also prominent in kabbalistic thinking and in the ethical literature of ḥasidism. It is also the meaning of the statement, "For there is not a righteous man upon earth who does good and does not sin" (Eccl. 7:26). For with the yetser ha-ra there is also the yetser ha-tov, the "good inclination" (see Good and Evil). Moreover, Judaism insists, as one of its basic teachings, that man is blessed with Free Will. The consequence of such freedom is that while he may be overcome, even momentarily, by his evil inclination, which leads him into sin, he can choose to master it. Man is thus free to obey or disobey, to fulfill the commandments of God or to reject them, and this is the challenge with which he is faced. In Jewish thought, every normal person enjoys such freedom, at least to an extent that enables him to make a moral choice.
While the Jewish concept of sin often appears to be formal, involving the legal minutiae of the law that has been broken, in its developed and spiritualized form sin is shown to result in a feeling of deep guilt experienced in man's sensitive conscience. This idealized concept is found in the later books of the Bible. Habakkuk (2:10) describes sin as an "offense against the soul," anything which disturbs man's spiritual equilibrium and causes his alienation from God (cf. Job 5:6, 18:5-21, 20:4-29; Ps. 38:3; Isa. 48:22, 57:21). Sin is the obverse of the holy and cuts man off from God.
While Jewish philosophers, both medieval and modern, relate to both the biblical and rabbinic concepts of sin, there is less emphasis on sin in the rabbinic sense of averah and a greater stress upon the psychological effect of sin as a state of alienation from man's noblest ideal or highest potential.
Throughout the entire literature, it is made abundantly clear that sin can be remedied and that the estrangement of man from God can be repaired by the exercise of sincere Repentance, which alone can restore man's wholeness. (See also Confession of Sins.)