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 labors for him, for his mouth urges him.

Genesis 3:17-19

And to Adam he said, Because thou have hearkened to the voice of thy wife, and have eaten of the tree, of which I commanded thee, saying, Thou shall not eat of it, cursed is the ground for thy sake. In toil thou shall eat of it all

Ecclesiastes 5:10

He who loves silver shall not be satisfied with silver, nor he who loves abundance, with increase. This also is vanity.

Ecclesiastes 6:3

If a man begets a hundred sons, and lives many years so that the days of his years are many, but his soul is not filled with good, and moreover he has no burial, I say, that an untimely birth is better than he.

Matthew 6:25

Because of this I say to you, be not anxious about your life, what ye may eat, or what ye may drink, nor yet for your body, what ye may wear. Is not the life more than the food, and the body than the clothing?

Luke 12:19

And I will say to my soul, Soul, thou have many goods laid up for many years. Take thine ease, eat, drink, be merry.

John 6:27

Work not for the food that perishes, but for the food that endures to eternal life, which the Son of man will give to you, for God the Father put a seal on this man.

1 Timothy 6:6-8

But piety 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 to Adam he said, Because thou have hearkened to the voice of thy wife, and have eaten of the tree, of which I commanded thee, saying, Thou shall not eat of it, cursed is the ground for thy sake. In toil thou shall eat of it all
Proverbs 16:26
The appetite of the laboring man labors for him, for his mouth urges him.
Matthew 6:25
Because of this I say to you, be not anxious about your life, what ye may eat, or what ye may drink, nor yet for your body, what ye may wear. Is not the life more than the food, and the body than the clothing?
John 6:27
Work not for the food that perishes, but for the food that endures to eternal life, which the Son of man will give to you, for God the Father put a seal on this man.
1 Timothy 6:6
But piety with contentment is great gain,

Appetite

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