SHABBOS IS THE MIDA OF MALCHUS

From B'yam Darkecha on the Beauty of Shabbos & the Yomim Tovim: R Yossi Michalowicz by R Yossi Michalowicz.

pp. 347-349 & 353-355: If Malchus represents the highest revelation of Hashem in this world, why is it the last Sefira on the bottom ? What aspect of Malchus is revealed during the weekdays vs. on Shabbos ?