Mah inyan ona'as d'varim eitzel shmittah or Har Sinai?
What's especially strange is the immediate follow up of the passuk, that by being careful with ona'as dvarim "v'shavsah ha'aretz lavetach". The land will rest. How is this a reward for witholding from ona'as dvarim?
The Maharal on avos 5:11 explains the Mishnah of galus ba l'olam on the "big 3" & shmittah, that all of them are a defiance of boundaries. (How-so is a long discussion.)
The end of the parshah warns not to make idols, desecrate Shabbos & finally ''es mikdashi tira'u''. Rashi explains that the Ztorah is warning a Jewish slave from following the practices of his non-Jewish master.
The Sifra details the thoughts of the slave - just as my master serves idols.... Just as my master desecrates Shabbos... Just as my master commits adultery....
It would be nice if the three thoughts of the slave are the 3 warnings of the passuk. Avodah zarah, & Shabbos make sense, but mikdashi tira'u?
It seems that here mikdashi does not only refer to the bais hamikdash
