2 Corinthians 5:21
New International Version (NIV)
21 God made *Him who had no sin to be sin for us, so that in him we might become the righteousness of God.
*Him represents Jesus
From the above verse,
How Jesus became sin without doing sin?
Similar,
You became the Righteousness of God in Christ without doing right deeds
Believing that we have been forgiven from our sins, past present and future: shows the love of God towards us
Knowing His goodness, leads us to repentance.