Reference for Proverbs 30:21

תַּ֣חַת שָׁ֭לוֹשׁ רָ֣גְזָה אֶ֑רֶץ וְתַ֥חַת אַ֝רְבַּ֗ע לֹא־תוּכַ֥ל שְׂאֵֽת׃

For three things the earth doth quake, And for four it cannot endure:

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