Am I saying that something good caused my death? Certainly not! It was sin that killed me by using something good. Now we can see how terrible and evil sin really is.
Does this mean that the Law is sinful? Certainly not! But if it had not been for the Law, I would not have known what sin is really like. For example, I would not have known what it means to want something that belongs to someone else, unless the Law had told me not to do that.
I wish they would always worship me with fear and trembling and be this willing to obey me! Then they and their children would always enjoy a successful life.