Romans 6:6 Knowing this, that our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin. 7 For he that is dead is freed from sin. 8 Now if we be dead with Christ, we believe that we shall also live with him: 9 Knowing that Christ being raised from the dead dieth no more; death hath no more dominion over him.
We are to know certain things according to these verses. Our old man has been crucified. That is already crucified, not going to be crucified. The body of sin has been destroyed. We are dead. The dead are freed from sin. We are dead but we live with Christ. We have been raised with Christ and sin has no more dominion over us!
Now this makes it clear that I have no excuse for my sin. I am freed to live a holy, God pleasing life. To say anything different is to deny Scripture. Live out who you are! You are a new creature. You have been born again. Live out the new life in you!