righteousness -
The quality or state of being righteous; holiness; purity; uprightness; rectitude. Righteousness, as used in Scripture and theology, in which it chiefly occurs, is nearly equivalent to holiness, comprehending holy principles and affections of heart, and conformity of life to the divine law.
righteousness -
A righteous act, or righteous quality.
righteousness -
The act or conduct of one who is righteous.
righteousness -
The state of being right with God; justification; the work of Christ, which is the ground justification.
Wikipedia
Righteousness (also called rectitude) is an important theological concept in Judaism and Christianity. It is an attribute that implies that a person's actions are justified, and can have the connotation that the person has been "judged" or "reckoned" as leading a life that is pleasing to God. William Tyndale remodelled the word after an earlier word rihtwis, which would have yielded modern English.