Ecclesiastes 6:7

All the labor of man is for his mouth, and yet the appetite is not filled.

Proverbs 16:26

The appetite of the laboring man laboreth for him; For his mouth urgeth him thereto .

Genesis 3:17-19

And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in toil shalt thou eat of it all the days of thy life;

Ecclesiastes 5:10

He that loveth silver shall not be satisfied with silver; nor he that loveth abundance, with increase: this also is vanity.

Ecclesiastes 6:3

If a man beget a hundred children, and live many years, so that the days of his years are many, but his soul be not filled with good, and moreover he have no burial; I say, that an untimely birth is better than he:

Matthew 6:25

Therefore I say unto you, be not anxious for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than the food, and the body than the raiment?

Luke 12:19

And I will say to my soul, Soul, thou hast much goods laid up for many years; take thine ease, eat, drink, be merry.

John 6:27

Work not for the food which perisheth, but for the food which abideth unto eternal life, which the Son of man shall give unto you: for him the Father, even God, hath sealed.

1 Timothy 6:6-8

But godliness with contentment is great gain:

Treasury of Scripture Knowledge

Summary

All the labour of man is for his mouth, and yet the appetite is not filled.

Bible References

The labour

Genesis 3:17
And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in toil shalt thou eat of it all the days of thy life;
Proverbs 16:26
The appetite of the laboring man laboreth for him; For his mouth urgeth him thereto .
Matthew 6:25
Therefore I say unto you, be not anxious for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than the food, and the body than the raiment?
John 6:27
Work not for the food which perisheth, but for the food which abideth unto eternal life, which the Son of man shall give unto you: for him the Father, even God, hath sealed.
1 Timothy 6:6
But godliness with contentment is great gain:

Appetite

Ecclesiastes 6:3
If a man beget a hundred children, and live many years, so that the days of his years are many, but his soul be not filled with good, and moreover he have no burial; I say, that an untimely birth is better than he:
Ecclesiastes 5:10
He that loveth silver shall not be satisfied with silver; nor he that loveth abundance, with increase: this also is vanity.
Luke 12:19
And I will say to my soul, Soul, thou hast much goods laid up for many years; take thine ease, eat, drink, be merry.

American Standard Version Public Domain