I would argue that you can follow the letter of the law with the resting on the sabbath quite easily. There is almost no instructions on this topic. And to even clarify Jesus teachings on the sabbath, it's ok to even work on the sabbath under some circumstances (rescuing your ox). And this is the letter of the law.

The Orthodox Jewish teachings are extra biblical and but re often confused as biblical. Not to different from how the Pope creates extra rules for Catholics.