Righteousness is an important subject in the Bible. The justification of the sinner in the New Testament is part of the teaching of salvation and is related to this subject. God is righteous in the Old and in the New Testament. He is righteous in judgment and in salvation. We look at the Hebrew words related to the concept of righteousness in the Old Testament, at the synonyms and antonyms which are used in the same contexts. In the New Testament we look especially at righteousness, righteous and to declare righteous. The apostle Paul's explanation of God's righteousness in Rom 3:21-26 is one of the most important texts about the subject. Have a look at this booklet Righteousness in the Old and New Testaments .