Genesis 3:19
By the sweat of your brow
What it says
By the sweat of his brow Adam will eat bread until he returns to the ground, because he is dust and will return to dust.
What it is doing
It brings the human judgment to its end point in death.
In context
16To the woman He said: 17And to Adam He said: 18Both thorns and thistles it will yield for you, 19By the sweat of your brow 20And Adam named his wife Eve, because she would be the mother of all the living.