Eternal sin
In Christian hamartiology, eternal sins, unforgivable sins, or unpardonable sins are sins which will not be forgiven by God. One eternal or unforgivable sin (blasphemy against the Holy Spirit) is specified in several passages of the Synoptic Gospels, including , , and .
Ethics in religion
Christian ethics in general has tended to stress the need for love, grace, mercy, and forgiveness because of sin. With divine assistance, the Christian is called to become increasingly virtuous in both thought and deed, see also the Evangelical counsels. Conversely, the Christian is also called to abstain from vice.