"Historically, the fast originated during a devastating plague that afflicted Mesopotamia and Assyria in the Sixth Century AD. The metropolitans of the East Syriac ecclesiastical provinces of Assyria or Adiabene (encompassing Arbil, Nineveh, and Hakkari) and Beth Garmaï (encompassing Kirkuk and the surrounding region) called for services of prayer, fasting, and penitence in all churches under their jurisdiction, following the example of the Ninevites. This tradition has been strictly observed for centuries. Patriarchs of both the Church of the East and Chaldean Catholic Church have also called for additional fasts to alleviate suffering in times of crisis, including during the persecution by ISIS in Nineveh and the broader Middle East."
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