All our days pass away under your wrath; we finish our years with a moan. Our days may come to seventy years, or eighty, if our strength endures; yet the best of them are but trouble and sorrow, for they quickly pass, and we fly away. If only we knew the power of your anger! Your wrath is as great as the fear that is your due. Teach us to number our days that we may gain a heart of wisdom. (Psalm 90: 9-12)