William Burkitt on Romans 13:1

Observe here, 1. The title given to magistrates, they are powers, higher powers, that is, persons invested with power, and placed in supreme authority over us. All mankind is not of one rank, doth not stand upon an equal level. Magistracy is an eminency or superiority of some persons above others.

Observe, 2. The original fountain from whence all power is derived from God, and is to be used for God; the magistrate acts by his authority, and consequently is to act for his interest, honour, and glory. It is agreeable to the will of God, that there should be such a thing as magistracy and government in the world; and it is his appointment that men should be governed by men deriving the power and authority from him: The powers that be are ordained of God.

Observe, 3. The apostle's strict injunction for subjection unto magistracy, as a divine ordinance: Let every soul be subject, that is, every person, by he of what rank, or in what station he will, high or low, honourable or ignoble, rich or poor, clergy or laity, he must be subject to God's ordinance.

Where note, That Christ is a friend to Caesar, and Christianity no enemy to loyalty: the best Christians are always the best subjects; none so true to their prince, as they that are most faithful to their God. Obedience to magistrates is both the duty of Christians, and the interest of Christianity.