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.
4. The state of being right with god; justification; the work of christ, which is the ground justification. There are two kinds of Christian righteousness: the one without us, which we have by imputation; the other in us, which consisteth of faith, hope, and charity, and other Christian virtues. (hooker) Only for the righteousness of Christ imputed to us, and received by faith alone. (Westminster Catechism)
Origin: AS. Rihtwisnes.