“For what does the Scripture say? Abraham believed God, and it was accounted unto him for righteousness. Now to him who works, the wages are not counted as grace but as debt” (Romans 4:3-4).
It is truly a God thing!
Righteousness means morally right or justifiable, but some of its synonyms help us more: blameless, guiltless, holy, innocent, just, sinless.
When God revealed himself as JEHOVAH TSIDKENU "THE LORD OUR RIGHTEOUSNESS", in the Old Testament (Jeremiah 23:5-8) the people were anything but sinless and guiltless. In fact, they were in the process of being hauled off into exile and captivity for their constant and longstanding sin, idolatry, and unfaithfulness to the Lord.
Righteousness is an attribute of God. When we think of the attributes of God, there are those that are specific to God, and Him alone. When we consider what is needed to communicate with God, sinlessness, and righteousness are prerequisites. We need righteousness to please God, and Jesus Christ gave us His, He (imputed) His righteousness to grant us access to God the Father. When the Bible tells us that God made man in His image and likeness, He also gave man the attributes which were His, but were and are communicable.
How exactly is the Lord our righteousness? Since every one of us except Jesus has sinned, we have no right to stand before God and say; "Here I am Lord, right, just, sinless and blameless. I'm innocent God." But Jesus can stand before the Father and say all those things. So by carrying our sins on the cross, He is letting us ride on his righteousness. He can say to the Father; "I've got the blood wrought Body of Christ covered. Don't look at her sin because I paid for it and I want you to see her as blameless." The Father accepts Jesus' righteousness as if it were ours.
The Bible gives and informs us of our values. God created the value system He wanted us to have. Do we deem righteousness of great price? If yes, then we value righteousness and the principles which govern our lives are to think right, act right, perform what is right, speak right, emote right, have a memory full of what is right, reason righteously, judge righteous judgment, imagine what is right, and live right: those are all principles, but the value is righteousness, and a righteous soul is our intentional goal. Imputed means that righteousness has been placed in our individual accounts, whether we are using it to operate our world view and values is up to each one of us.
God bless you.