Here are a few quotes from the early church.
Origen writes:
Celcus [a pagan] also urges us to take office in the government of the country, if that is necessary for the maintenance of the laws and the support of religion.¡¨ Origen (c. 248, E), 4.668.
Origin replies: However, we recognize in each state [that is in each country] the existence of another national organization that was founded by the Word of God. And we exhort those who are mighty in word and of blameless life to rule over churches. It is not for the purpose of escaping public duties that Christians decline public offices. Rather, it is so they may reserve themselves for a more divine and necessary service in the church of God for the salvation of men. Origen (c. 248, E), 4.668.
This world and the next are two enemies…. We cannot therefore be the friends of both. Second Clement (c.150, W), 7.518.
Origen 245: It is not possible for anyone to enter into the kingdom of heaven who has not been turned away from the affairs of this world
All zeal in the pursuit of glory and honor is dead in us. So we have no pressing inducement to take part in your public meetings. Nor is there anything more entirely foreign to us than the affairs of state. Tertullian (c. 197, W), 3.46.
The Caesars too would have believed on Christ, if either the Caesars had not been necessary for the world, or if Christians could have been Caesars. Tertullian (c. 195, W), 3.35.
If any bishop uses the rulers of this world and by their means comes to be a bishop of a church, let him be deprived and suspended – together with all who communicate with him. Apostolic constitutions (compiled c. 390, E), 7.501.
God Might have bestowed upon his people [i.e., Christians] both riches and kingdoms, as He had given previously to the Jews, whose successors and posterity we are. However, He would have Christians live under the power and government of others, lest they should become corrupted by the happiness of prosperity, slide into luxury, and eventually despise the Commandments of God. For this is what our ancestors did. Lactantius (c. 304-313, W), 7.160.
As for you, you are a foreigner in this world, a citizen of Jerusalem, the city above. Our citizenship, the apostle says, is in heaven. You have your own registers, your own calendar. You have nothing to do with the joys of this world. In fact, you are called to the very opposite – for “the world will rejoice, but you will mourn.” Tertullian (c. 212, W), 3.101.
We have no country on earth. Therefore, we can disdain earthly possessions. Clement of Alexandria (c. 195, E), 2.281.
We should ever and a day reflect that we have renounced the world and are in the meantime living here as guests and strangers. Cyprian (c. 250, W), 5.475.
Shall the Christian apply the chain, the prison, the torture, and the punishment - he who is not the avenger even of his own wrongs? Tertullian (c. 211, W), 3.99.
No conspiracy has ever broken out from our body. No Caesar's blood has ever fixed a stain upon us in the Senate or even in the palace. No assumption of the purple has ever in any of the provinces been affected by us. Tertullian (c. 197, W), 3.125.
What Tertullian is saying here is that no one has gotten into a place of authority by us.
…. what if the law of nature – that is, the law of God – commands what is opposed to the written law [the law of the government]? Does not reason tell us to bid long farewell to the written code…. and to give ourselves up to the Legislator, God? This is so even if in doing so it may be necessary to encounter dangers, countless labors, and even death and dishonor. Origen (c. 248, E), 4.560.