Eternity

What does the worker gain from his toil? I have seen the burden God has laid on men. He has made everything beautiful in its time. He has also set eternity in the hearts of men; yet they cannot fathom what God has done from beginning to end. I know that there is nothing better for men than to be happy and do good while they live. That everyone may eat and drink, and find satisfaction in all his toil—this is the gift of God. I know that everything God does will endure forever; nothing can be added to it and nothing taken from it. God does it so that men will revere him.

Ecclesiastes 3:9-14 NIV