Psalm 90:11 in the King James Version
Who knoweth the power of thine anger? even according to thy fear, so is thy wrath.
Context
10 The days of our years are seventy, or even by reason of strength eighty years; yet their pride is but labor and sorrow, for it passes quickly, and we fly away.
11 Who knows the power of your anger, your wrath according to the fear that is due to you?
12 So teach us to count our days, that we may gain a heart of wisdom.