Eternal sin
In Catholic teaching there are six sins that blaspheme against the Holy Spirit. They are: Several passages in the Bible are frequently interpreted as referring to the unforgivable sin:
Ten Commandments
The Ten Commandments concern matters of fundamental importance in Judaism and Christianity: the greatest obligation (to worship only God), the greatest injury to a person (murder), the greatest injury to family bonds (adultery), the greatest injury to commerce and law (bearing false witness), the greatest inter-generational obligation (honour to parents), the greatest obligation to community (truthfulness), the greatest injury to moveable property (theft).