More than mere custodians of ancient wisdom, Egyptian priests engaged deeply in science, philosophy, metaphysics, and unique spiritual rituals that distinguished them from the cultures of their time.
Diodoros of Sicily, known in Latin as Diodorus Siculus, was an Ancient Greek historian of the first century BC whose monumental work, Bibliotheca Historica, aimed to present a universal history of the known world. Among the most influential and frequently cited sections of his work is Book I, devoted almost entirely to Egypt.
In this volume, Diodoros offered a detailed account of Egyptian religion, law, education, and science, with particular attention to the Egyptian priests. His portrayal not only reflected Greek fascination with Egyptian antiquity but also presented the priests as custodians of ancient wisdom, moral authority, and scientific expertise.
Diodoros repeatedly defined Egypt as the world’s most ancient civilization, asserting that many Greek institutions were shaped by Egyptian precedents. Central to this claim is the priestly class, whom he described as the intellectual and moral elite of Egyptian society—practitioners of a disciplined life guided by rituals, symbolic observances, and metaphysical reflection.
According to Diodoros, “the priests were judged to be the most learned of the Egyptians, devoting their lives to the study of philosophy and the observation of the stars” (Bibliotheca Historica I.73). This depiction aligned with a broader Hellenistic tradition that regarded Egypt as a source of primordial wisdom, predating Greek philosophy.
Egyptian priests and their rigorous education
One of the most striking aspects of Diodoros’ account was the rigorous education of Egyptian priests. He emphasized that their instruction was highly structured and extended over many years, encompassing not only religious rituals but also mathematics, astronomy, medicine, and ethics. He noted, “they give instruction to their sons in geometry and arithmetic, and also in the doctrines concerning the gods” (I.81). This blending of scientific learning and religious authority reflects the integrated nature of knowledge in Egyptian culture, as perceived through Greek eyes.
Diodoros also highlighted the priests’ crucial role in preserving historical records. He asserted that Egyptian priests maintained detailed written archives stretching back thousands of years—a claim that impressed Greek readers accustomed to comparatively recent historical traditions. He wrote, “The priests have records of their kings written down in their sacred books for more than ten thousand years” (I.44). While modern historians question the literal accuracy of this time reference, the statement underscores how Egyptian priests were regarded as guardians of an almost unimaginably ancient past.
Beyond their intellectual authority, Egyptian priests were depicted as moral exemplars. Diodoros described their lives as austere and disciplined, governed by strict codes of conduct. He observed: “The priests are maintained at the expense of the state, and lead lives of great purity, being permitted no luxury or excess” (I.73). Their regulated diet, daily rituals, and observance of strict cleanliness reinforced their status as intermediaries between the human and divine realms. This idealized portrayal likely resonated with Greek philosophical ideals of self-control and virtue.
The first lawmakers
Diodoros further credited Egyptian priests with the creation of laws and the establishment of social order. He maintained that Egyptian law was divinely inspired and administered by priests who interpreted the will of the gods. “They say that the laws were given to them by Hermes, and for this reason they regard them as immutable” (I.94). By tracing legal authority to divine revelation, Diodoros underscored the sacred foundations of Egyptian governance, implicitly contrasting it with the more secular political systems of the Ancient Greek world.
The historian also connected Egyptian priestly knowledge to the origins of Greek philosophy. He suggested that renowned Greek thinkers such as Pythagoras and Plato traveled to Egypt, where they studied under the guidance of priests. As Diodoros stated, “Pythagoras was instructed by the Egyptian priests, from whom he learned many of his doctrines concerning the soul” (I.98). Although modern scholars approach such claims with caution, they were highly influential in antiquity and reinforced the perception of Egypt as the spiritual and intellectual precursor to key Greek philosophical traditions.
Some scholars argue that Diodoros’ admiration for the Egyptian priests compromised the objectivity of his account. His portrayal was shaped by Greek interpretive frameworks and reflects a broader tendency to idealize Egypt as a land of perfect order and primordial wisdom. The priests, in particular, appear less as historical individuals and more as symbolic figures representing continuity, stability, and knowledge. Nevertheless, Diodoros’ work remains invaluable, especially given that many native Egyptian sources were inaccessible or entirely lost to Greek audiences.
Taken as a whole, Diodoros of Sicily’s writings present Egyptian priests as the intellectual, moral, and religious backbone of Egyptian civilization. Through his descriptions of their education, disciplined lifestyle, legal authority, rituals, and scientific expertise, the Ancient Greek historian constructed an enduring image of a priesthood that embodied both divine insight and human wisdom.
Metaphysical ideas and peculiar rituals and habits of Egyptian priests
Among Greek historians, Diodoros offered one of the most detailed and intriguing portrayals of Egyptian priests, emphasizing not only their intellectual authority but also their highly distinctive habits and metaphysical beliefs.
In Bibliotheca Historica Book I, Egyptian priests emerge as figures governed by ritual precision, symbolic taboos, and an elaborate cosmological worldview. These elements fascinated Greek readers, who often interpreted Egyptian customs as outward expressions of a profound and ancient philosophy embedded in everyday life and rituals.
One of the most striking aspects of priestly life, according to Diodoros, was the strict regulation of diet. Egyptian priests were bound by laws of ritual purity that excluded certain foods altogether. Most famously, Diodoros highlighted their avoidance of onions, a detail that became emblematic of Egyptian religious austerity. He wrote that “the priests abstain from onions, since this plant is considered unclean and generates flatulence and passion” (I.70).
To Greek audiences, such a prohibition appeared peculiar, yet Diodoros presented it as part of a broader symbolic system in which physical substances were believed to influence moral and spiritual states. Dietary restrictions extended well beyond onions. He emphasized that priests consumed food in carefully measured quantities and avoided excess, observing that “they live on a frugal diet, believing that restraint preserves both the body and the soul” (I.73).
Restrain and asceticism
This restraint was not merely ascetic but fundamentally metaphysical, as bodily moderation was believed to bring the soul into harmony with the cosmic order. Such ideas closely parallel Greek philosophical ethics, particularly Pythagorean thought, which may help explain why Diodoros viewed Egyptian priestly practices with admiration rather than ridicule.
Another distinctive habit described by Diodoros is the priests’ meticulous concern with bodily cleanliness. He noted that Egyptian priests regularly shaved their entire bodies to avoid lice and ritual impurity, explaining that “they shave the whole body every third day, so that no vermin or filth may be found upon them while serving the gods” (I.83). This rigorous approach to hygiene carried deep symbolic meaning, as physical cleanliness was understood to reflect spiritual purity, reinforcing the priests’ role as intermediaries between the human and divine realms.
Clothing, too, held metaphysical significance. The Greek historian observed that priests wore linen garments rather than wool, writing that “they wear garments of linen only, since wool is thought to pollute the body” (I.83). Linen, derived from plants, symbolized purity and order, while wool, associated with animals, represented disorder and corruption. Such distinctions reveal a worldview in which material substances were believed to possess inherent moral qualities, shaping both daily life and sacred rituals.
Immortality of the soul
Beyond their daily habits, Diodoros attributed to Egyptian priests a highly developed metaphysical doctrine concerning the soul. He reported that they firmly believed in the soul’s immortality and its cyclical journey through different forms of existence. According to Diodoros, “they hold that the soul is immortal and that after the dissolution of the body it enters into another living creature” (I.96). This doctrine of transmigration, or metempsychosis, closely resembles Pythagorean philosophy and reinforces the idea, widespread in antiquity, that key elements of Greek metaphysical thought had Egyptian origins.
This belief in the immortality of the soul directly shaped priestly ethics. Diodoros explained that moral conduct was essential, as the soul would be judged and reassigned after death. He noted that “they teach that the rewards of virtue and the punishments of vice await men after death” (I.92). The elaborate funerary rituals of Egypt, overseen by priests, thus reflected a metaphysical system in which justice extended far beyond earthly life.
Another distinctive feature emphasized by Diodoros was the priests’ symbolic interpretation of myth and ritual practice. He insisted that Egyptian religion was not a form of naive superstition but a sophisticated system encoding philosophical truths. “The myths are not to be taken as idle tales,” he wrote, “but as accounts which conceal theories of nature and the universe” (I.11). For the priests, the gods represented cosmic forces, and ritual actions mirrored the workings of the natural world. This allegorical approach deeply impressed Greek intellectuals accustomed to abstract philosophical reasoning.
Finally, Diodoros observed that Egyptian priests were forbidden from altering sacred doctrines. Innovation was considered dangerous, as religious knowledge was believed to have been divinely revealed. He stated that “the priests change nothing in their customs, holding that what was established by the gods must remain forever unchanged” (I.94). This resistance to change reinforced Egypt’s enduring reputation as a civilization defined by continuity, stability, and timeless wisdom.
See all the latest news from Greece and the world at Greekreporter.com. Contact our newsroom to report an update or send your story, photos and videos. Follow GR on Google News and subscribe here to our daily email!
