Punishment is the inevitable and equitable consequence of breaking the law of God. In keeping with God's justice and righteousness, punishment is administered by him or by human beings as his agents.
God warned Adam and Eve of the punishment for disobedience
See also
Adam and Eve's original disobedience brought inevitable punishment
Upon the serpent
Upon the woman
Upon the man
Upon creation
The punishment of death
Banishment as punishment
Punishment must be appropriate to the crime
Punishment reflects the obligations of the offenders towards their victims
Divine punishment is always totally just
God appoints human agents to administer his punishment