RIGHTEOUSNESS IS A GIFT

 2 CORINTHIANS 5:21

For He made Him who knew no sin to be sin for us that we might become the righteousness of God in Him.

Jesus knew no sin but for our sake, God imputed all our sins to Him on the cross and He imputed all His righteousness to us. this exchange took place on the cross of Calvary 2000 years ago. 

we dont earn our own righteousness, if we are following rules and regulations to be right with God, then its not going to happen, because in this new covenant the only way to be righteous in God's eyes is to believe in your heart and confess with your mouth that Jesus is Lord.

ROMANS 10:10 

For with the heart one believes unto righteousness and with the mouth confessions are made unto salvation