Can't do it. Don't need to do it. The sin debt has been paid.
Well, that's my point, really. :0)
That's the point, and why you should hardly dismiss this stuff as "silly".
God is concerned about obedience down to that level of detail. Anything less and we are not holy enough to be in his presence.
Thank goodness for his Payment. But you would do well not to minimize its magnitude, which I think you do when you ridicule honest attempts to adhere to His Law.