These oriental gods, moreover, were adaptable. They were sometimes identified with familiar Greek and Roman divinities, in the same fashion as Greek gods had been given Italian names; but their adaptability went much further. Freed from all local restrictions, the Orientals could take on the characteristics and functions required by their new environment without losing their individualities, and their systems could be easily modified and elevated to meet the needs and demands of successive generations. Unmoral or even immoral when first brought into the Greco-Roman world, a number of them adopted first the current secular morality and eventually became strong moral agencies. Finally they all displayed a pantheistic tendency. We have already seen how philosophy inclined from the first toward pantheism or monotheism; that the general attitude which first belonged to the philosopher became finally common to large numbers of men, for the human mind naturally tends to see resemblances and through them affinities, rather than their opposites. Therefore in religious thought men, acting consciously or unconsciously under the influence of philosophy and of this syncretistic tendency, now looked through the variety of popular polytheism and found unity in the divine; they did not deny the multiplicity of gods, but they rather regarded each of the many gods as a manifestation of the one divine principle in the world. So religion was in agreement with Stoicism and the later mystic philosophies.

The devotees of the oriental gods generally adopted this syncretistic view, so that most, if not all, saw in their god the supreme all-embracing divinity whose divine nature was manifest in countless other gods. This belief is best expressed by Apuleius, who composed his famous Metamorphoses in the middle of the second century of our era. After his hero Lucius had passed through many hardships and adventures, the saving goddess Isis appeared in a vision and thus declared herself: “Lo, I am here, Lucius, moved by thy prayers, I, the parent of the universe, mistress of the elements, the primal offspring of the ages, greatest of divinities, queen of the dead, first among the celestials, the single form of gods and goddesses; I, who by my word rule the bright heights of heaven, the healthful breezes of the sea, the gloomy silent shades below. To my divinity, one in itself, the entire world does reverence under many forms, with varied rites, and manifold names. Hence it is that the primal Phrygians call me at Pessinus the Mother of the Gods, hence the Athenians, who are sprung from the ground on which they dwell, name me Cecropian Minerva, the wave-beat Cyprians Paphian Venus, the archer Cretans Dictynnan Diana, the Sicilians with their triple speech Stygian Proserpina, the people of Eleusis ancient Ceres, others Juno, others Bellona, some Hecate, again Rhamnusia; but the Aethiopians on whom shine the growing rays of the sun at his birth, the Arians, and the Egyptians, mighty in their ancient learning, worship me with the proper rites and call me by my true name Queen Isis.”[288]

This revelation by the goddess not only squares with the pantheism of philosophic thought and with the doctrine of emanations of the divine, such as were believed in by the Neoplatonists, but it is also in harmony with the popular polytheism. At the beginning of the second century of our era the genial Plutarch first stated a philosophy of a universal syncretistic religion: “Not different gods among different peoples—gods of Barbarians, of Greeks, of the South, or of the North; but even as sun and moon, heaven and earth and sea are common to all, yet have different names among different peoples, so there is one Intelligence which rules in the world, one Providence which directs it; the same powers act everywhere. Honors, names, and symbols vary.”[289] This statement represents the attitude of all the more enlightened classes after the beginning of the second century. A pantheism, which made abundant provision for a subordinate polytheism, was the dominant belief. In fact Greco-Roman paganism ended in such a pantheism, in which the sun was the symbol of the supreme and all-embracing divinity.

Although many, if not most, of these eastern religions were probably mysteries, requiring that their devotees should undergo certain initiatory rites before being admitted to full participation in the sacred service, we shall confine ourselves to sure ground and shall consider briefly the mysteries of Isis, of Mithras, and of the Great Mother of the Gods—especially those of Isis, because Apuleius, from whose work I quoted a moment ago, has left us a rather full account of the initiation of his hero Lucius, whose experiences in this part of the Metamorphoses are apparently the author’s own.

Isis and Osiris were ancient gods whose worship had been wide spread in Egypt from very early times; they had been carried by Egyptian traders to some other parts of the Mediterranean world before the conquests of Alexander. But the form of the Isiac religion which ultimately spread over the Greco-Roman world was a conscious mingling of Egyptian and Hellenic elements. The Ptolemies naturally desired to unite the Greeks and Egyptians under their rule, and Ptolemy Soter (306-285 b.c.), the first of the line, according to Plutarch, employed Manetho, a priest at Heliopolis in Egypt, and Timotheus, one of the sacred family of the Eumolpidae in Eleusis, to work out a modified religion of Isis, with whom was now associated a new divinity, Serapis, said to have been originally Hades of Sinope, a Greek colony on the south shore of the Black Sea. Thus Greek elements were grafted on the Egyptian stock, Serapis being identified with Osiris. The ancient forms apparently were largely retained, and the priesthood remained Egyptian; but Greek became the common language for the ritual, while Greek artists made statues of Isis and her consort, and Greek poets sang the goddess’s praise. Thus the spread of this composite religion was rendered easy, especially as its mysteries claimed to give that assurance of salvation for which men longed.

The mysteries were based on the story of Osiris, the brother and husband of Isis. According to the tale Set, or Typhon, killed Osiris, but the body was discovered by Isis. However while Isis was visiting her son Horus, Set again gained possession of the body, tore it in pieces, and scattered its fragments far and wide. But these Isis once more found and buried, and now Osiris lives again and reigns in the lower world, and also in heaven, as the sun; that is, Osiris-Serapis is lord of life and death. The story was early brought into relation with the Egyptian doctrine of immortality. It is another myth of a god who dies and lives again, whose rebirth, like that of Dionysus, Attis, and Adonis, becomes the warrant of man’s future existence. The story was early acted as a kind of passion play at Abydos; this element was kept in the Ptolemaic creation, so that in Rome, at least beginning with the reigns of Caligula and of Claudius, Isis’ hunt for her murdered consort, her mourning for him, and her joy over the discovery of his body and over his revival were experienced again yearly by her priests during the days from October 28 to November 3. The final joy of the participants in this sacred season was indicated by the name, Hilaria, given to the last day. The Empire also knew a spring festival of the goddess as ruler of the sea and protectress of sailors.

There were three grades of initiation into the Isiac mysteries. The first was that of Isis, the second of Osiris-Serapis, the third led to the priesthood. In Apuleius’ story his hero Lucius had through over-curious tampering with a magic unguent been changed into the shape of an ass. In this form he suffered various adventures which fill the greater part of the extraordinary work; but at last, through the favor of the goddess, he was restored to his human form, and in a vision was commanded to devote himself to the divine service. Although most eager to be initiated, he was informed that he must wait until the goddess should indicate her willingness to receive him. Finally another vision told him that the happy day had arrived. At dawn the priest met him and conducted him to the temple, where the matin service of opening the shrine was solemnly performed. Then he told Lucius that he must provide certain things before the initiation took place—evidently gifts to the temple and the priests and something in the nature of a fee. After these had been secured, Lucius was taken to a public bath nearby, where after prayer the priest sprinkled him with holy water and duly purified him. Then Lucius was led back to the temple, set at the feet of the goddess, and secretly given many instructions “too sacred for utterance”; openly he was charged to abstain for ten consecutive days from all pleasures of the table, to eat no animal food, and to drink no wine.

After the ten days of preparation had been reverently observed, toward nightfall great numbers of the initiates assembled bringing gifts to the neophyte. When the uninitiate had been excluded from the temple area, a fresh robe was placed about Lucius and he was led into the holiest part of the shrine. What there took place he might not tell; only this much he could say: “I approached the bounds of death. I trod the threshold of Proserpina. I was carried through all the elements and returned again to the upper air. At dead of night I saw the sun all glowing with a brilliant light. The gods of heaven and of hell I approached in very person and worshipped face to face.”[290]

Our imagination may busy itself as much as it will with trying to conceive the means which were employed to produce this effect; it is most probable that a hypnotic condition was induced in the neophyte and that in this state he was made to see the proper visions. But that must remain uncertain. This, however, is clear: the initiate, through a series of emotional experiences, was inspired with the belief that he had seen a divine vision. Like the seer in the Apocalypse, he knew that there was no night in the final abode of those who had been consecrated. By passing through the elements he had acquired a knowledge of holy things, which no uninitiated could possibly gain: he had been given assurance that he was to be ever after under the divine protection—in fact he had attained the certainty of salvation.