וְאֵלֶּה הַמִּשְׁפָּטִים אֲשֶׁר תָּשִׂים לִפְנֵיהֶם. כִּי תִקְנֶה עֶבֶד עִבְרִי שֵׁשׁ שָׁנִים יַעֲבֹד וּבַשְּׁבִעִת יֵצֵא לַחָפְשִׁי חִנָּם.

Why does it start with this Mitzva? Because of the chet of Adam, we have to work and make birurim. There is the derech yisurim and the derech HaTorah. The derech HaTorah is sweet and allows us to do the Birurim be’Rachamim. We had to go down to Mitzrayim to understand that we are either avadim to Pharoah or to Hashem, which is hard in the beginning but sweet ba’hemshech. Mishpat means Rachamim, which is the essence of the entire Torah. So the first mitzva of the MISHPATIM, which is the birurim of the Torah, is that a Jew can NEVER be a real slave. He can work for 6 years, but then he goes free. Because he is an eved to Hashem and not an eved to avadim.

The same with Shabbos and Shvi’is. To show us that we are not servants to this world. We need to work, but on the seventh day we show we aren’t really servants to the teva.