Tertullian, On Idolatry 17
What about faithful slaves or freedmen, artisans who cling to masters, patrons, or governors who sacrifice? If anyone hands over unmixed wine to a sacrificer, or even assists a sacrifice with a single necessary word, he will be counted a minister of idolatry. Mindful of that rule, we can also render service to magistrates and authorities on the pattern of the patriarchs and other ancestors who served idolatrous kings to the very end of idolatry. This raises the next question: can a servant of God undertake the administration of some dignity or power if he can keep himself untouched by every form of idolatry, whether by grace or even by cunning? Joseph and Daniel, after all, kept themselves clear of idolatry in the world and administered dignity and power wearing the ornament and purple of all Egypt or Babylonia. Let us therefore believe it possible for someone to succeed in such a way that, in whatever honor, he walks in the mere name of honor: he does not sacrifice, does not lend his authority to sacrifices, does not provide victims, does not take charge of temple duties, does not collect their revenues, does not stage spectacles from his own purse or the public treasury, nor preside over them; he issues no solemn pronouncement or decree, not even an oath. As for the functions of power: he does not judge over anyone's head or shame (money cases you will judge), does not condemn or pass sentence, does not bind, imprison, or torture anyone—if that is believable.
Latin
Caeterum quid facient servi vel liberi fideles, item officinales sacrificantibus dominis vel patronis vel praesidibus suis adhaerentes? Sed si merum quis sacrificanti tradiderit, imo si verbo quoque aliquo sacrificio necessario adjuverit, minister habebitur idololatriae. Hujus regulae memores etiam magistratibus et potestatibus officium possumus reddere secundum patriarchas et caeteros majores, qui regibus idololatris usque ad finem idololatriae apparuerunt. Hinc proxime disputatio suborta est, an servus Dei alicujus dignitatis aut potestatis administrationem capiat, si ab omni specie idololatriae intactum se, aut gratia aliqua, aut astutia etiam praestare possit: secundum quod et Joseph, et Daniel mundi ab idololatria exstitere, et dignitatem et potestatem administraverunt in ornamento et purpura totius Aegypti sive Babyloniae. Credamus itaque succedere alicui posse, ut in quoquo honore, ut in solo honoris nomine incedat, neque sacrificet, neque sacrificiis auctoritatem suam accommodet, non hostias locet, non curas templorum deleget, non vectigalia eorum procuret, non spectacula edat de suo aut de publico, aut edendis praesit: nihil solemne pronuntiet vel edicat, ne juret quidem: jam vero quae sunt potestatis, neque judicet de capite alicujus vel pudore (feras enim de pecunia), neque damnet neque praedamnet, neminem vinciat, neminem recludat, aut torqueat; si haec credibile est fieri posse.