Kabbalah zu Jeschijahu 66:23

The secret is that they remain as above (in the Nukva). When the body is flawed, the soul inside remains the same. The one state resembles the other. Therefore, they are renewed like the moon, as it is written, "And it shall come to pass, that every new moon, and every Shabbat, shall all flesh come to bow down to the ground before Me, says Hashem" (Isaiah 66:23). "All flesh" assuredly, for they are in need of renewal along with the moon.

Woe to those when they leave this world. Who shall ask about them and plead for them when they are turned over to hands of (the Angel) Dumah, and are in the burning fire, which they can leave only on the first day of the month and on the days of Shabbat? As it is written: "And it shall come to pass, that every new moon and every Shabbat, shall all flesh come to bow down to the ground before Me, says Hashem" (Yeshayah 66:23). When (they) are over, an announcer from the north says, "The wicked shall be turned back to Sheol" (Tehilim 9:18), many angels of destruction then gather and attack them. From four sides, fire is burning in the valley of Ben Hinnom. (They do so to punish the wicked who spoiled the four aspects of Chochmah, Binah, Tiferet and Malchut).