Psalm 90:11 in the World English Bible
Who knows the power of your anger, your wrath according to the fear that is due to you?
Context
10 The days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labour and sorrow; for it is soon cut off, and we fly away.
11 Who knoweth the power of thine anger? even according to thy fear, so is thy wrath.
12 So teach us to number our days, that we may apply our hearts unto wisdom.