Sin is a complex concept that has religious, moral, philosophical, psychological and social implications, which will be discussed separately below. In the most general sense, sin is a single or multiple violation of a moral ethical-social standard, or a continuous state in which sin is regularly committed. It is mostly used in religious contexts as it has religious origin. The violation of standard is primarily an act that the existing system of socio-religious-moral norms considers to be bad, such as prostitution and fornication, which religions generally regard as serious sins, but it can also be the very opposite of it, non-action deed, that is, omission, but it also applies to non-deeds that are present only as thoughts. The judgment of sin is generally determined by religious social standards, as our contemporary societies have built moral values into their system of value from their religion, but these may change from time to time as society itself changes, e.g. the omission of Sunday worship in medieval Christian society was considered as serious sin, but in the present materialist Western world it is not at all. The issue of prostitution falls into a similar category, which antique societies did not regard as sin at all, since their gods were quite adulterous (just think of the great god Zeus, who often even raped his human or divine sexual victims). On top of that, at the early times of antiquity, promiscuity was socially accepted at the so called Bacchanal festivals, where sexual debauchery and prostitution were a common occurrence.