After the people failed miserably in their attempts to be good, God brought about His promised miracle by creating something new — people who would from the heart operate from love. He did this by putting an end to the lifeless, dead heart (life-source) and created a new one. He brought this about by sending His Son in the likeness of lifeless mankind and He killed it when He died. And then He brought about a new creation after the likeness of His new, resurrected life.
Now, if any of you are hearing this with the spirit of condemnation hanging over your head, it’s only because you’re trying to hold on to two radically different propositions at the same time. It’s like trying to travel east and west simultaneously. But trying to do the one while believing we are still doing the other is the very thing that leaves us confused and paralyzed. You see, asking God to help you to remove your sin is built upon the assumption that Jesus Christ hasn’t already done it. source