Ecclesiastes 3:10

7 A time for undoing and a time for stitching; a time for keeping quiet and a time for talk;

8 A time for love and a time for hate; a time for war and a time for peace.

9 What profit has the worker in the work which he does?

10 I saw the work which God has put on the sons of man.

11 He has made everything right in its time; but he has made their hearts without knowledge, so that man is unable to see the works of God, from the first to the last.

12 I am certain that there is nothing better for a man than to be glad, and to do good while life is in him.

13 And for every man to take food and drink, and have joy in all his work, is a reward from God.