Matthew 16:26

What good will it do a man to gain the whole world, if he forfeits his life? or what will a man give that is of equal value with his life?

Mark 8:36-37

What good is it to a man to gain the whole world and forfeit his life?

John 6:27

Work, not for the food that perishes, but for the food that lasts for Immortal Life, which the Son of Man will give you; for upon him the Father--God himself--has set the seal of his approval."

Treasury of Scripture Knowledge

Summary

What profit hath a man of all his labour which he taketh under the sun?

Bible References

Profit

Matthew 16:26
What good will it do a man to gain the whole world, if he forfeits his life? or what will a man give that is of equal value with his life?
Mark 8:36
What good is it to a man to gain the whole world and forfeit his life?
John 6:27
Work, not for the food that perishes, but for the food that lasts for Immortal Life, which the Son of Man will give you; for upon him the Father--God himself--has set the seal of his approval."