Ask if imperfection and death automatically follow sin. JW will answer yes.
Hopefully ?
Ask if Satan is imperfect then.
{ They will try to argue he was a perfect son of God who has gone astray} trying to deflect the question At this point they will likely say he is only asking a question and not actually disobeying any of Gods laws/rules at this point.
However when Adam and Eve follow Satans direction he then makes himself an adversary to the most high God.
Where Satan becomes imperfect and should be subjected to the death penalty in line with the death penalty Jehovah imposed on humans if God was fair and just.