GOD'S WORD® Translation
We know that the person we used to be was crucified with him to put an end to sin in our bodies. Because of this we are no longer slaves to sin.

American Standard Version
knowing this, that our old man was crucified with him , that the body of sin might be done away, that so we should no longer be in bondage to sin;

Berean Study Bible
We know that our old self was crucified with Him so that the body of sin might be rendered powerless, that we should no longer be slaves to sin.

Douay-Rheims Bible
Knowing this, that our old man is crucified with him, that the body of sin may be destroyed, to the end that we may serve sin no longer.

English Revised Version
knowing this, that our old man was crucified with him, that the body of sin might be done away, that so we should no longer be in bondage to sin;

King James Bible
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.

World English Bible
knowing this, that our old man was crucified with him, that the body of sin might be done away with, so that we would no longer be in bondage to sin.

Young's Literal Translation
this knowing, that our old man was crucified with him, that the body of the sin may be made useless, for our no longer serving the sin;

Romans 6:6 Additional Translations ...