Rom. 8:3-4 For what the law could not do in that it was weak through the flesh, God did by sending His own Son in the likeness of sinful flesh, on account of sin: He condemned sin in the flesh, that the righteous requirement of the law might be fulfilled in us who do not walk according to the flesh but according to the Spirit.
Living a righteous life is a major aspect of what all religion is about. It was only Judaism and later Christianity that taught that man was desperately wicked because of his fallen condition. The condition is so dire that man has no chance of being righteous or living a life pleasing to God. Despite our best efforts, all of our attempts at goodness fall miserably short. That is where the superiority of the gospel message shines brightest. All who believe in the sacrificial death of Christ are declared righteous as a free gift. The righteous life that Jesus Christ lived is credited to us, He took our judgement, we received His righteousness. But wait, the news gets even better. Not only are we declared righteous, The Lord comes to live His life in us. We actually begin to experience a transformation where we began to live a life like Christ. This becomes the testimony of Jesus, Christ living His righteous life in us. Here is how A.B. Simpson describes it.
“As long as we struggle under law-that is, by our own effort-sin shall have dominion over us. But the moment we step from under the shadow of Sinai and throw ourselves upon the simple grace of Christ and His free and absolute gift of righteousness, the struggle is practically over. We take Him to be to us what He has pledged Himself to be-our righteousness of thought and feeling-and ask Him to keep us, in spite of everything that ever can be against us, in His perfect will and peace.
Do we really know and believe that this is the very promise of the gospel, the very essence of the new covenant? Do we believe Christ pledges Himself to put His law in our hearts, to cause us to walk in His statutes and to keep His judgments and do them? Do we know that this is the oath which He swore unto Abraham-that he would grant unto us, that we being delivered out of the hand of our enemies might serve him without fear, in holiness and righteousness before him, all the days of our life? He has sworn to do this for us, and He is faithful that promised. Let us trust Him.”
The gospel is the power of God to salvation to all those who believe. Not only are we covered by God’s grace, we receive the gift of righteousness by faith. The gospel is not a cover to continue in our sin, far from it. It is the way out, the only way out of the snares of sin.