After the death of Julian most of the heathen writers, especially the ablest and most estimable, confined themselves to the defence of their religion, and thus became, by reason of their position, advocates of toleration; and, of course, of toleration for the religious syncretism, which in its cooler form degenerates into philosophical indifferentism.

Among these were Themistius, teacher of rhetoric, senator, and prefect of Constantinople, and afterwards preceptor of the young emperor Arcadius; Aurelius Symmachus, rhetorician, senator, and prefect of Rome under Gratian and Valentinian II., the eloquent pleader for the altar of Victoria; and above all, the rhetorician Libanius, friend and admirer of Julian, alternately teaching in Constantinople, Nicomedia, and Antioch. These all belong to the second half of the fourth century, and represent at once the last bloom and the decline of the classic eloquence. They were all more or less devoted to the Neo-Platonic syncretism. They held, that the Deity had implanted in all men a religious nature and want, but had left the particular form of worshiping God to the free will of the several nations and individuals; that all outward constraint, therefore, was contrary to the nature of religion and could only beget hypocrisy. Themistius vindicated this variety of the forms of religion as favorable to religion itself, as many Protestants justify the system of sects. The rivalry of different religions, says he in his oration on Jovian, serves to stimulate zeal for the worship of God. There are different paths, some hard, others easy, some rough, others smooth, leading to the same goal. Leave only one way, and shut up the rest, and you destroy emulation. God would have no such uniformity among men.... The Lord of the universe delights in manifoldness. It is his will, that Syrians, Greeks, Egyptians should worship him, each nation in its own way, and that the Syrians again should divide into small sects, no one of which agrees entirely with another. Why should we thus enforce what is impossible? In the same style argues Symmachus, who withholds all direct opposition to Christianity and contends only against its exclusive supremacy.

Libanius, in his plea for the temples addressed to Theodosius I. (384 or 390), called to his aid every argument, religious, political, and artistic, in behalf of the heathen sanctuaries, but interspersed bitter remarks against the temple-storming monks. He asserts among other things, that the principles of Christianity itself condemn the use of force in religion, and commend the indulgence of free conviction.

Of course this heathen plea for toleration was but the last desperate defence of a hopeless minority, and an indirect self-condemnation of heathenism for its persecution of the Christian religion in the first three centuries.

In the new state of things the defence of Christianity was no longer of so urgent and direct importance as it had been before the time of Constantine. And the theological activity of the church now addressed itself mainly to internal doctrinal controversy. Still the fourth and fifth centuries produced several important apologetic works, which far outshone the corresponding literature of the heathen.

(1) Under Constantine we have Lactantius in Latin, Eusebius and Athanasius in Greek, representing, together with Theodoret, who was a century later, the close of the older apology.

Lactantius prefaces his vindication of Christian truth with a refutation of the heathen superstition and philosophy; and he is more happy in the latter than in the former. He claims freedom for all religions, and represents the transition standpoint of the Constantinian edicts of toleration.

Eusebius, the celebrated historian, collected with diligence and learning in several apologetic works, above all in his Evangelic Preparation, the usual arguments against heathenism, and in his Evangelic Demonstration the positive evidences of Christianity, laying chief stress upon the prophecies.

With less scholarship, but with far greater speculative compass and acumen, the great Athanasius, in his youthful productions against the Greeks, and on the incarnation of the Logos (before 325), gave in main outline the argument for the divine origin, the truth, the reasonableness, and the perfection of the Christian religion. These two treatises, particularly the second, are, next to Origen's doctrinal work De principiis, the first attempt to construct a scientific system of the Christian religion upon certain fundamental ideas of God and world, sin and redemption; and they form the ripe fruit of the positive apology in the Greek church. The Logos, Athanasius teaches, is the image of the living, only true God. Man is the image of the Logos. In communion with him consist the original holiness and blessedness of paradise. Man fell by his own will, and thus came to need redemption. Evil is not a substance of itself, not matter, as the Greeks suppose, nor does it come from the Creator of all things. It is an abuse of freedom on the part of man, and consists in selfishness or self-love, and in the dominion of the sensuous principle over the reason. Sin, as apostasy from God, begets idolatry. Once alienated from God and plunged into finiteness and sensuousness, men deified the powers of nature, or mortal men, or even carnal lusts, as in Aphrodite. The inevitable consequence of sin is death and corruption. The Logos, however, did not forsake men. He gave them the law and the prophets to prepare them for salvation. At last he himself became man, neutralized in human nature the power of sin and death, restored the divine image, uniting us with God and imparting to us his imperishable life. The possibility and legitimacy of the incarnation lie in the original relation of the Logos to the world, which was created and is upheld by him. The incarnation, however, does not suspend the universal reign of the Logos. While he was in man, he was at the same time every where active and reposing in the bosom of the Father. The necessity of the incarnation to salvation follows from the fact, that the corruption had entered into human nature itself, and thus must be overcome within that nature. An external redemption, as by preaching God, could profit nothing. For this reason the Saviour assumed humanity, that man, united with life, might not remain mortal and in death, but imbibing immortality might by the resurrection be immortal. The outward preaching of redemption would have to be continually repeated, and yet death would abide in man. The object of the incarnation is, negatively, the annihilation of sin and death; positively, the communication of righteousness and life and the deification of man. The miracles of Christ are the proof of his original dominion over nature, and lead men from nature-worship to the worship of God. The death of Jesus was necessary to the blotting out of sin and to the demonstration of his life-power in the resurrection, whereby also the death of believers is now no longer punishment, but a transition to resurrection and glory. This speculative analysis of the incarnation Athanasius supports by referring to the continuous moral effects of Christianity, which is doing great things every day, calling man from idolatry, magic, and sorceries to the worship of the true God, obliterating sinful and irrational lusts, taming the wild manners of barbarians, inciting to a holy walk, turning the natural fear of death into rejoicing, and lifting the eye of man from earth to heaven, from mortality to resurrection and eternal glory. The benefits of the incarnation are incalculable, like the waves of the sea pursuing one another in constant succession.

(2) Under the sons of Constantine, between the years 343 and 350, Julius Firmicus Maternus, an author otherwise unknown to us, wrote against heathenism with large knowledge of antiquity, but with fanatical zeal, regarding it, now on the principle of Euhemerus, as a deification of mortal men and natural elements, now as a distortion of the biblical history. At the close, quite mistaking the gentle spirit of the New Testament, he urges the sons of Constantine to exterminate heathenism by force, as God commanded the children of Israel to proceed against the Canaanites; and openly counsels them boldly to pillage the temples and to enrich themselves and the church with the stolen goods. This sort of apology fully corresponds with the despotic conduct of Constantius, which induced the reaction of heathenism under Julian.

(3) The attack of Julian upon Christianity brought out no reply on the spot, but subsequently several refutations, the chief one by Cyril of Alexandria ( 444), in ten books against the impious Julian, still extant and belonging among his most valuable works. About the same time Theodoret wrote an apologetic and polemic work: The Healing of the Heathen Affections, in twelve treatises, in which he endeavors to refute the errors of the false religion by comparison of the prophecies and miracles of the Bible with the heathen oracles, of the apostles with the heroes and lawgivers of antiquity, of the Christian morality with the immorality of the heathen world.

(4) Among the Latin apologists we must mention Augustine, Orosius, and Salvianus, of the fifth century. They struck a different path from the Greeks, and devoted themselves chiefly to the objection of the heathens, that the overthrow of idolatry and the ascendency of Christianity were chargeable with the misfortunes and the decline of the Roman empire. This objection had already been touched by Tertullian, but now, since the repeated incursions of the barbarians, and especially the capture and sacking of the city of Rome under the Gothic king Alaric in 410, it recurred with peculiar force. By way of historical refutation the Spanish presbyter Orosius, at the suggestion of Augustine, wrote an outline of universal history in the year 417.

Augustine himself answered the charge in his immortal work On the city of God, that is) the church of Christ, in twenty-two books, upon which he labored twelve years, from 413 to 426, amidst the storms of the great migration and towards the close of his life. He was not wanting in appreciation of the old Roman virtues, and he attributes to these the former greatness of the empire, and to the decline of them he imputes her growing weakness. But he rose at the same time far above the superficial view, which estimates persons and things by the scale of earthly profit and loss, and of temporary success. The City of God is the most powerful, comprehensive, profound, and fertile production in refutation of heathenism and vindication of Christianity, which the ancient church has bequeathed to us, and forms a worthy close to her literary contest with Graeco-Roman paganism. It is a grand funeral discourse upon the departing universal empire of heathenism, and a lofty salutation to the approaching universal order of Christianity. While even Jerome deplored in the destruction of the city the downfall of the empire as the omen of the approaching doom of the world, the African father saw in it only a passing revolution preparing the way for new conquests of Christianity. Standing at that remarkable turning-point of history, he considers the origin, progress, and end of the perishable kingdom of this world, and the imperishable kingdom of God, from the fall of man to the final judgment, where at last they fully and forever separate into hell and heaven. The antagonism of the two cities has its root in the highest regions of the spirit world, the distinction of good and evil angels; its historical evolution commences with Cain and Abel, then proceeds in the progress of paganism and Judaism to the birth of Christ, and continues after that great epoch to his return in glory. Upon the whole his philosophy of history is dualistic, and does not rise to the unity and comprehensiveness of the divine plan to which all the kingdoms of this world and even Satan himself are made subservient. He hands the one city over to God, the other to the demons. Yet he softens the rigor of the contrast by the express acknowledgment of shades in the one, and rays of light in the other. In the present order of the world the two cities touch and influence each other at innumerable points; and as not all Jews were citizens of the heavenly Jerusalem, so there were on the other hand true children of God scattered among the heathen like Melchisedek and Job, who were united to the city of God not by a visible, but by an invisible celestial tie. In this sublime contrast Augustine weaves up the whole material of his Scriptural and antiquarian knowledge, his speculation, and his Christian experience, but interweaves also many arbitrary allegorical conceits and empty subtleties. The first ten books he directs against heathenism, showing up the gradual decline of the Roman power as the necessary result of idolatry and of a process of moral dissolution, which began with the introduction of foreign vices after the destruction of Carthage; and he represents the calamities and approaching doom of the empire as a mighty preaching of repentance to the heathen, and at the same time as a wholesome trial of the Christians, and as the birth-throes of a new creation. In the last twelve books of this tragedy of history he places in contrast the picture of the supernatural state of God, founded upon a rock, coming forth renovated and strengthened from all the storms and revolutions of time, breathing into wasting humanity an imperishable divine life, and entering at last, after the completion of this earthly work, into the sabbath of eternity, where believers shall rest and see, see and love, love and praise, without end.

Less important, but still noteworthy and peculiar, is the apologetic work of the Gallic presbyter, Salvianus, on providence and the government of the world. It was composed about the middle of the fifth century (440-455) in answer at once to the charge that Christianity occasioned all the misfortunes of the times, and to the doubts concerning divine providence, which were spreading among Christians themselves. The blame of the divine judgments he places, however, not upon the heathens, but upon the Christianity of the day, and, in forcible and lively, but turgid and extravagant style, draws an extremely unfavorable picture of the moral condition of the Christians, especially in Gaul, Spain, Italy, and Africa. His apology for Christianity, or rather for the Christian faith in the divine government of the world, was also a polemic against the degenerate Christians. It was certainly unsuited to convert heathens, but well fitted to awaken the church to more dangerous enemies within, and stimulate her to that moral self-reform, which puts the crown upon victory over outward foes. The church, says this Jeremiah of his time, which ought every where to propitiate God, what does she, but provoke him to anger? How many may one meet, even in the church, who are not still drunkards, or debauchees, or adulterers, or fornicators, or robbers, or murderers, or the like, or all these at once, without end? It is even a sort of holiness among Christian people, to be less vicious. From the public worship of God, he continues, and almost during it, they pass to deeds of shame. Scarce a rich man, but would commit murder and fornication. We have lost the whole power of Christianity, and offend God the more, that we sin as Christians. We are worse than the barbarians and heathen. If the Saxon is wild, the Frank faithless, the Goth inhuman, the Alanian drunken, the Hun licentious, they are by reason of their ignorance far less punishable than we, who, knowing the commandments of God, commit all these crimes. He compares the Christians especially of Rome with the Arian Goths and Vandals, to the disparagement of the Romans, who add to the gross sins of nature the refined vices of civilization, passion for theatres, debauchery, and unnatural lewdness. Therefore has the just God given them into the hands of the barbarians and exposed them to the ravages of the migrating hordes.

This horrible picture of the Christendom of the fifth century is undoubtedly in many respects an exaggeration of ascetic and monastic zeal. Yet it is in general not untrue; it presents the dark side of the picture, and enables us to understand more fully on moral and psychological grounds the final dissolution of the western empire of Rome.

I. Comp. The sources at 4 and 5, especially the writings of Julian The Apostate Katav Cristianw'n, and Libanius, u Jpe;r tw'n i Jerw'n. Also Pseudo-lucian: Philopatris (of the age of Julian or later, comprised in the works of Lucian). Proclus (412-487): xviii ejpiceirhvmata katav cristianw'n (preserved in the counter work of Joh. Philoponus: De aeternitate mundi, ed. Venet. 1535). In part also the historical works of Eunapius and Zosimus.

II. Marqu. d'Argens: defense du paganisme par l'emper. Julien en grec et en franc. (collected from fragments in Cyril), avec des dissertat. Berl. 1764, sec. ed. Augmentee, 1767. This singular work gave occasion to two against it by G. Fr. Meier, Halle, 1764, And W. Crichton, Halle, 1765, in which the arguments of Julian were refuted anew. Nath. Lardner, in his learned collection of ancient heathen testimonies for the credibility of the Gospel History, treats also largely of Julian. See his collected works, ed. by Dr. Kippis, Lond. 1838, vol. vii. p. 581-652. Schroeckh: vi. 354-385. Neander: iii. 77 sqq. (Engl. transl. of Torrey ii. 84-93).

The internal conflict between heathenism and Christianity presents the same spectacle of dissolution on the one hand and conscious power on the other. And here the Nicene age reaped the fruit of the earlier apologists, who ably and fearlessly defended the truth of the true religion and refuted the errors of idolatry in the midst of persecution. The literary opposition to Christianity had already virtually exhausted itself, and was now thrown by the great change of circumstances into apology for heathenism; while what was then apology on the Christian side now became triumphant polemics. The last enemy was the Neo-Platonic philosophy, as taught particularly in the schools of Alexandria and Athens even down to the fifth century. This philosophy, however, as we have before remarked, was no longer the product of pure, fresh heathenism, but an artificial syncretism of elements heathen and Christian, Oriental and Hellenic, speculative and theurgic, evincing only the growing weakness of the old religion and the irresistible power of the new.

Besides the old oft-refuted objections, sundry new ones came forward after the time of Constantine, in some cases the very opposite of the earlier ones, touching not so much the Christianity of the Bible as more or less the state-church system of the Nicene and post-Nicene age, and testifying the intrusion of heathen elements into the church. Formerly simplicity and purity of morals were the great ornament of the Christians over against the prevailing corruption; now it could be justly observed that, as the whole world had crowded into the church, it had let in also all the vices of the world. Against those vices, indeed, the genuine virtues of Christianity proved themselves as vigorous as ever. But the heathen either could not or would not look through the outward appearance and discriminate the wheat from the chaff. Again: the Christians of the first three centuries had confessed their faith at the risk of life, maintained it under sufferings and death, and claimed only toleration; now they had to meet reproach from the heathen minority for hypocrisy, selfishness, ambition, intolerance, and the spirit of persecution against heathens, Jews, and heretics. From being suspected as enemies to the emperor and the empire, they now came to be charged in various ways with servile and fawning submission to the Christian rulers. Formerly known as abhorring every kind of idolatry and all pomp in worship, they now appeared in their growing veneration for martyrs and relics to reproduce and even exceed the ancient worship of heroes.

Finally, even the victory of Christianity was branded as a reproach. It was held responsible by the latest heathen historians not only for the frequent public calamities, which had been already charged upon it under Marcus Aurelius and in the time of Tertullian, but also for the decline and fall of the once so mighty Roman empire. But this objection, very popular at the time, is refuted by the simple fact, that the empire in the East, where Christianity earlier and more completely prevailed, outlived by nearly ten centuries the western branch. The dissolution of the west-Roman empire was due rather to its unwieldy extent, the incursion of barbarians, and the decay of morals, which was hastened by the introduction of all the vices of conquered nations, and which had already begun under Augustus, yea, during the glorious period of the republic; for the republic would have lasted much longer if the foundations of public and private virtue had not been undermined. Taken from a higher point of view, the downfall of Rome was a divine judgment upon the old essentially heathen world, as the destruction of Jerusalem was a judgment upon the Jewish nation for their unbelief. But it was at the same time the inevitable transition to a new creation which Christianity soon began to rear on the ruins of heathendom by the conversion of the barbarian conquerors, and the founding of a higher Christian civilization. This was the best refutation of the last charge of the heathen opponents of the religion of the cross.