We know that our old self was [figuratively] crucified with Christ, in order that the body of sin [i.e., our whole life of sin] might be destroyed [i.e., become powerless to control our actions and thoughts], so that we should not be enslaved to the practice of sin any longer.

But the person who has doubts about eating [a certain food] is self-condemned if he [goes ahead and] eats it, because his action is not based on faith [i.e., if he lacks the conviction that he is doing what is right]. And whatever is not done with such a conviction is a sin.