Why is Hoshanah Rabba connected to our judgment regarding water and parnassah, our livelihood?

Hoshana Rabbah is the true final seal of judgment for the year, when Hashem irrevocably finalizes all decrees for life, parnassah, and destiny – a sealing more critical than Yom Kippur, as taught by the Zohar. While parnassah's *amount* is set on Rosh Hashanah, Hoshana Rabbah seals its *manner* of delivery. Its connection to water emphasizes that parnassah comes miraculously and entirely from Shamayim, not human effort. The Zohar warns that Hoshana Rabbah should be feared more than Yom Kippur, as it is the absolute last chance to change one's decree through Torah, mitzvot, and teshuvah. Therefore, the custom of all-night Torah study is vital to add merits before the judgment is irreversibly sealed.