Ecclesiastes 2:22-25

For what does a man get in all his labor and in his striving with which he labors under the sun? Because all his days his task is painful and grievous; even at night his mind does not rest. This too is vanity. There is nothing better for a man than to eat and drink and tell himself that his labor is good. This also I have seen that it is from the hand of God. For who can eat and who can have enjoyment without Him?