Augsburg Confession Articles 15-16
Article XV: Of Ecclesiastical Usages.
1] Of Usages in the Church they teach that those ought to be observed which may be observed without sin, and which are profitable unto tranquillity and good order in the Church, as particular holy days, festivals, and the like.
2] Nevertheless, concerning such things men are admonished that consciences are not to be burdened, as though such observance was necessary to salvation.
3] They are admonished also that human traditions instituted to propitiate God, to merit grace, and to make satisfaction for sins, are opposed to the Gospel and the doctrine of faith. Wherefore vows and traditions concerning meats and 4] days, etc., instituted to merit grace and to make satisfaction for sins, are useless and contrary to the Gospel.
Article XVI: Of Civil Affairs.
1] Of Civil Affairs they teach that lawful civil ordinances are good works of God, and that 2] it is right for Christians to bear civil office, to sit as judges, to judge matters by the Imperial and other existing laws, to award just punishments, to engage in just wars, to serve as soldiers, to make legal contracts, to hold property, to make oath when required by the magistrates, to marry a wife, to be given in marriage.
3] They condemn the Anabaptists who forbid these civil offices to Christians.
4] They condemn also those who do not place evangelical perfection in the fear of God and in faith, but in forsaking civil offices, for 5] the Gospel teaches an eternal righteousness of the heart. Meanwhile, it does not destroy the State or the family, but very much requires that they be preserved as ordinances of God, and that charity be practiced in such 6] ordinances. Therefore, Christians are necessarily bound to obey their own magistrates 7] and laws save only when commanded to sin; for then they ought to obey God rather than men. Acts 5:29