קבלה אויף מלכים ב 2:19

At times, the kindnesses affect that the conduits of judgment become diminished, so that the conduits of kindness and mercy flow in greater abundance. At other times, if mankind sins, the conduits of kindness and mercy become diminished and the conduits of judgment flow in greater abundance. At such times, there is a drawing forth of various harsh matters to HaShem’s-יהו״ה title Lord-Adona”y-אדנ״י, blessed is He. Then, the entire world is in a state of suffering and lacking and there are various plagues and illnesses that are drawn to the world. At times, all the upper conduits become blocked, and then there is a drawing forth of influence from the conduits of the external powers of evil, that are called “bad waters-Mayim Ra’im-מים רעים.”³⁰⁸See Kings II 2:19; Mishnah Avot 1:11 At such times there is destruction of lands, kingdoms are uprooted and there are harsh and difficult exiles.