Why Sabbath Doesn't Have a Partner?

The traditional Jewish answer is that the partner of Shabbat is the Jewish people. But I want to go in a slightly different direction, which is going to require us to remember our conversation last week about the difference between Selim and Demut. The idea of having God's image being God shaped in a vague, basic sort of way to actually bearing God's Demut, God's likeness,. And we can see this in the naming of Ha'vah twice, the first just being like, gosh, she's a lady, that's what she is, but her as an individual is not just Isha, or as an individual, she is Ha'Vah.