Ambrosiaster, on Rom 13:4

“For he is God’s minister to thee, for good. But if thou do that which is evil, fear: for he beareth not the sword in vain. For he is God’s minister: an avenger to execute wrath upon him that doth evil.”

“Since God has ordained that there will be a future judgment and he does not want anyone to perish, he has ordained rulers in this world who, by causing people to be afraid of them, act as tutors to mankind, teaching them what to do in order to avoid future punishment.”

Imported from an open dataset — not yet checked against the printed edition.