From John Piper's book Life is a Vapor:
"As for man, his days are like grass; he flourishes like a flower of the field; for the wind passes over it, and it is gone, and its place knows it no more" (Psalm 103:15-16)
"Only one life, 'twill soon be past, only what's done for Christ will last. What a tragedy when we fail to see that Christ, by his death and resurrection, has freed us from this evil age - from everything that we would look back on and say: wasted.
Therefore, attach yourself to the gospel of Christ. This alone will turn your earthly vapor into everlasting life. 'For all flesh is like grass and all its glory like the flower of grass. The grass withers, and the flower falls, but the world of the Lord remains forever.' And this word is the good news that was preached to you. (1 Peter 1:24-25) "
Grace upon grace,