NET
6 We know that our old man was crucified with him so that the body of sin would no longer dominate us, so that we would no longer be enslaved to sin.
Darby
6 knowing this, that our old man has been crucified with [him], that the body of sin might be annulled, that we should no longer serve sin.
KJV
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.