Zohar Ki Tetze
“ יְהוָה–בַּשָּׁמַיִם, הֵכִין כִּסְאוֹ; וּמַלְכוּתוֹ, בַּכֹּל מָשָׁלָה”
“YHVH has established His throne in the heavens; and His kingdom (His Malchut) rules over all.”
YHVH rules over all including the impure side (Klipot). The Zohar gives example of Esther that she and Mordechai overcame Haman. Esther with the help of the Shechina ‘dressed’ herself with Malchut.
That force of Light in Malchut gave Esther the ability to control the King and all the people of his kingdom.
The Zohar reveals to us that the Shechina concealed Esther from King Ahasuerus. When the king invited her for intimacy the Shechina sent a spiritual entity that can appear in the physical realm to be with him. Esther kept her purity and the other side could not harm her.
Lesson: When we have the Light we can have control over Malchut. When the Israelites over the world are united with the Light, they have the support to control their future.