ברכות ז׳ א:ח׳
How much time does His anger last? God’s anger lasts a moment. And how long is a moment? One fifty-eight thousand, eight hundred and eighty-eighth of an hour, that is a moment. The Gemara adds: And no creature can precisely determine that moment when God becomes angry, except for Balaam the wicked, about whom it is written: “He who knows the knowledge of the Most High” (Numbers 24:16).
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