Sweep men away in the sleep of death

Psalm 90:1-6
You have been our dwelling place throughout all generations.
From everlasting to everlasting you are God.
You turn men back to dust, saying," Return to dust, O sons of men."
For a thousand years in your sight are like a day that has just gone by.
You sweep men away in the sleep of death; they are like the new grass of the morning- through in the morning it springs up new, by evening it is dry and withered.
Why?
Compared with the eternal nature of God, we mortals are transient as a blade of grass, our life is short.
Dwelling place:  We are living in the place of the Lord, in His love and mercy.
Life of men are short and passed away very soon, but the Lord is everlasting. How little a man is?
No matter how marvelous success in this world, all of these will be sweep away when we sleep of death.
After a man sleep of death, everything relate to him is passed away, no one remember him.
How?
What we can grasp in our life? Only follow with the eternal one - the Lord.