10 The length of our days is seventy years-- or eighty, if we have the strength; yet their span is but trouble and sorrow, for they quickly pass, and we fly away. David or another Psalmist wrote this about 900 BC. Considering the lengthy life spans Adam through Abraham had, then, how poor the life spans were until just in recent human history when they started going back up due to improved sanitation and medical care, I think this is an amazing verse that very closely reflects the life span today on average. There is no way this was the average life span either in David's time, Christ's time on earth, during the Middle Ages, or anything before barely 200 years ago. Any thoughts?