It means 'man' in the sense of 'humanity' Our old humanity (the humanity of the first man, adam) is crucified with christ To translate it as 'self' is a philosophical interpretation, not disciplined translation. What is the difference between old man in 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.
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