For all our days are passed away in thy wrath: we spend our years as a tale that is told. 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. Who knoweth the power of thine anger? even according to thy fear, [so is] thy wrath. So teach us to number our days, that we may apply our hearts unto wisdom.