The Apostle Paul
Romans 13:4BSB·traditional attribution

For he is God’s servant for your good. But if you do wrong, be afraid, for he does not carry the sword in vain. He is God’s servant, an agent of retribution to the wrongdoer.

John Calvin Reformed @genevareformer

4. For he is God’s minister for good, etc. Magistrates may hence learn what their vocation is, for they are not to rule for their own interest, but for the public good; nor are they endued with unbridled power, but what is restricted to the wellbeing of their subjects; in short, they are responsible to God and to men in the exercise of their power.

Matthew Henry Presbyterian @wholebiblehenry

We are here taught how to conduct ourselves towards magistrates, and those that are in authority over us, called here the higher powers, intimating their authority (they are powers), and their dignity (they are higher powers), including not only the king as supreme, but all inferior magistrates under him: and yet it is expressed, not by the persons that are in that power, but the...

Commenting on Romans 13:1-6

John Gill Reformed Baptist @doctorgill

For he is the minister of God to thee for good,.... He is a minister of God's appointing and commissioning, that acts under him, and for him, is a kind of a vicegerent of his, and in some, sense represents him; and which is another reason why men ought to be subject to him; and especially since he is appointed for their "good", natural, moral...