This was written very close to the year 200, to the Roman emperors, who almost certainly never read it, but the words have been preserved. This is what conquest of an empire by real Christians looks like:
This is long, but so very much worth reading!! I have highlighted portions to make the whole easier to understand and read.
“If we are enjoined, then, to love our enemies, as I have remarked above, whom have we to hate? If injured, we are forbidden to retaliate, lest we become as bad ourselves: who can suffer injury at our hands? In regard to this, recall your own experiences. How often you inflict gross cruelties on Christians, partly because it is your own inclination, and partly in obedience to the laws! How often, too, the hostile mob, paying no regard to you, takes the law into its own hand, and assails us with stones and flames! …
“Yet, banded together as we are, ever so ready to sacrifice our lives, what single case of revenge for injury are you able to point to, though, if it were held right among us to repay evil by evil, a single night with a torch or two could achieve an ample vengeance? …
“If we desired, indeed, to act the part of open enemies, not merely of secret avengers, would there be any lacking in strength, whether of numbers or resources? … We are but of yesterday, and we have filled every place among you—cities, islands, fortresses, towns, market-places, the very camp, tribes, companies, palace, senate, forum,—we have left nothing to you but the temples of your gods. For what wars should we not be fit, not eager, even with unequal forces, we who so willingly yield ourselves to the sword, if in our religion it were not counted better to be slain than to slay? Without arms even, and raising no insurrectionary banner, but simply in enmity to you, we could carry on the contest with you by an ill-willed severance alone. For if such multitudes of men were to break away from you, and betake themselves to some remote corner of the world, why, the very loss of so many citizens, whatever sort they were, would cover the empire with shame; nay, in the very forsaking, vengeance would be inflicted. … You would have to seek subjects to govern. You would have more enemies than citizens remaining.
“For now it is the immense number of Christians which makes your enemies so few,—almost all the inhabitants of your various cities being followers of Christ Yet you choose to call us enemies of the human race, rather than of human error.
Nay, who would deliver you from those secret foes, ever busy both destroying your souls and ruining your health? Who would save you, I mean, from the attacks of those spirits of evil, which without reward or hire we exorcise? This alone would be revenge enough for us, that you were henceforth left free to the possession of unclean spirits. But instead of taking into account what is due to us for the important protection we afford you, and though we are not merely no trouble to you, but in fact necessary to your well-being, you prefer to hold us enemies, as indeed we are, yet not of man, but rather of his error.” (Tertullian, Apology37)
“But go zealously on, good presidents, you will stand higher with the people if you sacrifice the Christians at their wish, kill us, torture us, condemn us, grind us to dust; your injustice is the proof that we are innocent. Therefore God suffers [allows] that we thus suffer; for but very lately, in condemning a Christian woman to the leno [pimp] rather than to the leo [lion] you made confession that a taint on our purity is considered among us something more terrible than any punishment and any death. Nor does your cruelty, however exquisite, avail you; it is rather a temptation to us. The oftener we are mown down by you, the more in number we grow; the blood of Christians is seed. Many of your writers exhort to the courageous bearing of pain and death, as Cicero in the Tusculans, as Seneca in his Chances, as Diogenes, Pyrrhus, Callinicus; and yet their words do not find so many disciples as Christians do, teachers not by words, but by their deeds. That very obstinacy [in the face of persecution] you rail against is the preceptress [expert teacher].
“For who that contemplates [our obstinacy in the face of persecution] is not excited to inquire what is at the bottom of it? who, after inquiry, does not embrace our doctrines? and when he has embraced them, desires not to suffer that he may become partaker of the fulness of God’s grace, that he may obtain from God complete forgiveness, by giving in exchange his blood? For that secures the remission of all offences. On this account it is that we return thanks on the very spot for your sentences. As the divine and human are ever opposed to each other, when we are condemned by you, we are acquitted by the Highest. (Tertullian, Apology, ch. 50)”