This study tries to analyse the derivatives of the concept δικαιοσύνη using either philological, exegetical and theological dimensions of the etimon. In the Old Testament, δικαιοσύνη is synonymous with the concept of “making justice”, and in the ancient greek literature, dresses an adjectival value meaning “righteousness, proper behavior”. The concept brings light on new dimensions into the New Testament area, emphasizing pauline theology, where δικαιοσύνη is the action of God through man, reaching it to he’s aristocratical dignity, the one of God’s Image.