Sin is a term used to describe either an action that is prohibited in religious ethics or law, or a fallen state of being. The religious concept of sin is tied to a cluster of interrelated issues including atonement, theodicy, free will, ethics, guilt, and law.
Sin is a transgression against divine law. Sin can also be viewed as any thought or action that endangers the ideal relationship between an individual and God; or as any diversion from the perceived ideal order for human living.
Sins are generally actions, any thought, word, or act considered immoral, selfish, shameful, harmful, or alienating might be termed “sinful“.
Christian Views of Sin
Jewish Views of Sin
Islamic views of Sin