What is attested
At Athens impiety was actionable. A citizen who chose to could bring a public suit for asebeia, ordinarily before the archon basileus, the magistrate responsible for the ancestral cults; there were alternative routes, including denunciation to the Council or Assembly and summary arrest for certain offences. No text of a statute defining asebeia survives, and this absence shapes everything that follows: what we know of the offence's scope we know from courtroom speeches, which are advocacy, and from narratives written by people with a stake in the outcome. The handful of impiety speeches that survive are all about acts and property — a damaged olive stump, the mishandling of rites and money — which is what the surviving sample looks like rather than a measure of the whole run of business. A surviving Athenian defence answers a charge of removing the sekos of a sacred olive on a leased estate — the word denotes either the stump itself or the enclosure protecting it, and which of the two was meant is disputed. Another surviving prosecution attacks the official charged with re-inscribing the city's sacred calendar, alleging that he mishandled the rites and the money. Other attested categories include theft from a temple, misuse of sacred funds, offences against suppliants, and entering or performing in a sanctuary when excluded. This is a law of trespass, damage and procedure applied to a sacred domain.
The great Athenian scandal of 415 BC illustrates both the seriousness of such charges and the difficulty of reading motive from them. On the eve of the Sicilian expedition most of the herms standing at doorways and crossroads in the city were mutilated in a single night, and in the ensuing investigation informers alleged that the Eleusinian Mysteries had been performed in private houses in front of the uninitiated. Thucydides, writing as a contemporary, records that Athenians took the affair as evidence of a conspiracy against the democracy — the political reading is not a modern imposition, it is in the earliest source. Andocides, who was himself implicated and gave information, defended himself fifteen years later in a speech that survives and supplies most of our names. The independent confirmation is archaeological and unusually good: a set of inscribed stelai from about 414 or 413 BC records the public auction of property confiscated from the condemned — land in Attica and beyond it, stores of produce, slaves, furniture, listed item by item with prices. Twelve of the thirty-three men Andocides names over the Mysteries and four of his twenty-two herm-mutilators appear on the surviving fragments. The stones prove that convictions happened and that they had real material consequences. They also show what the process produced: seized estates sold at auction, not recantations.
The trial of Socrates in 399 BC is the most discussed impiety case and the most treacherous. The charge is reported in three forms. Plato's Apology has Socrates state it: wrongdoing in corrupting the young and in not acknowledging the gods the city acknowledges but other new divinities. Xenophon opens his Memorabilia with essentially the same formulation. Diogenes Laertius, writing at some point in the first half of the third century AD, quotes the affidavit and says that Favorinus, a writer of the second century AD, reported that it was still preserved in the Metroon, the Athenian archive: the suit sworn by Meletus son of Meletus of Pitthos against Socrates son of Sophroniscus of Alopece, alleging failure to acknowledge the city's gods, introduction of other new divinities, and corruption of the young, with death proposed as the penalty. That chain deserves stating plainly rather than collapsing: an archive document reported by a second-century writer, quoted by a third-century compiler, more than six centuries after the trial. Plato and Xenophon are both partisans writing to rehabilitate their teacher. What no source contains, including the hostile ones, is a doctrinal examination. Nobody asks Socrates to affirm a proposition. The prosecution alleges a failure of acknowledgement and observance and an importation, and the jury voted on a man, a manner and a reputation.
Everything therefore turns on what the phrase rendered 'not acknowledging the gods the city acknowledges' meant, and this is genuinely unresolved. The verb is built on nomos, custom or law, and its range runs from holding something to be the case to treating something as customary. On one reading the charge alleges disbelief in the existence of the city's gods; on another it alleges failure to render them their customary observance; on a third the distinction is one the Athenians had no reason to draw, because for them acknowledging a god and giving it its due were not separable operations. An honest brief should not pick a side. What can be said is that the offence is framed as something a person does or fails to do with respect to specified gods, that the accompanying allegation is about introducing other divinities rather than about erroneous opinions concerning the existing ones, and that Athens had no body empowered to define correct belief, no formulary, and nothing that could be violated in the way a creed is violated.
Rome had no equivalent action and reached the same territory by other routes. Sacrilege — theft from a temple — was an ordinary criminal offence. The unchastity of a Vestal was prosecuted as incestum and punished by burial alive, which is policing a status, not an opinion. Intrusion on a rite reserved to women produced the prosecution of Clodius after the Bona Dea affair in 62 BC, an episode our sources treat frankly as a political event. Above these sat the Senate's and the magistrates' power to regulate cult in the public interest. The best-documented instance is the suppression of the Bacchanalia in 186 BC, and it is the model case for this subject's hazard, because for once we have both the document and the story. The bronze tablet from Tiriolo in Bruttium, the oldest surviving senatorial decree in Latin, does not abolish the cult: it forbids shrines, prohibits a man from holding the priesthood, bans a common treasury and officers, limits the number who may participate, and requires prior authorization from the urban praetor and the Senate acting with a stated quorum. It is a licensing and association-control measure. Livy, writing about 160 years later, supplies a narrative of nocturnal initiations, sexual crime, murder, forged wills and an oath-bound conspiracy against the state, traced to an anonymous Greek practitioner and a Campanian priestess who corrupted the rites. The bronze corroborates none of that. Four centuries after the Bacchanalian decree, the machinery reached its most explicit form. No text of the edict issued under Decius in AD 250 survives; the surviving certificates and the Christian sources together indicate that inhabitants were required to sacrifice before commissioners and were issued certificates recording that they had done so, and any statement of the requirement's exact scope rests on that reconstruction. More than forty of these papyrus certificates survive from Egypt. They attest a performed act, witnessed and filed. They ask no one what they believe.
How the rite worked
Athenian procedure put prosecution in private hands. There was no public prosecutor; any citizen in good standing could initiate a public suit, and the archon basileus conducted the preliminary hearing for impiety, fixed the issues and set the trial. Trials were single-day events before juries of several hundred, timed by water-clock, with speeches by the parties themselves (often written for them by professionals), no judicial direction on the law, no deliberation and no reasoned verdict. Penalty in many public suits was assessed in a second vote between the figures proposed by each side, which is the procedure that produced the death sentence in Socrates' case as Plato describes it. The system had a brake on frivolous prosecution: a prosecutor in a public suit who failed to win a set fraction of the votes incurred a heavy fine and a partial loss of civic rights.
Penalties were material and social rather than doctrinal. They ranged across fines, confiscation, loss of civic rights, exile, and death, sometimes with a portion of confiscated property assigned to a sanctuary. The Athenian stelai of 414 or 413 BC show the confiscation stage in operation: the condemned men's holdings itemised and auctioned, with the proceeds and the sales tax recorded on stone for public inspection. Condemnation in absentia was possible and was used against Alcibiades. There was no procedure for readmission by recantation, because there was nothing to recant; a person exiled for impiety came back, if at all, by decree.
Rome regulated rather than prosecuted. Cult inside the city was managed by magistrates advised by the priestly colleges, which controlled the calendar, the archive of formulae and the interpretation of prodigies; the Senate could and did restrict a cult, expel practitioners of a foreign rite from the city, or subject an association to licensing, as the Bacchanalian decree did. The consistent object of these measures is the organizational form — shrines, funds, officers, numbers, nocturnal meeting — rather than the content of anyone's convictions, and the same instruments were used against unlicensed associations that had nothing to do with the gods. Under the Empire this developed into the demand for a performed public act as a test of loyalty, certified in writing, which is where the Decian certificates come from.
The evidence and its limits
Each class of evidence below is followed by what it cannot show. That second half is not a disclaimer; it is the part most accounts of ancient religion leave out.
Literary sources
Forensic speeches (Andocides, Lysias, and the Socratic apologies), historians (Thucydides, Livy) and biographers (Plutarch, Diogenes Laertius) provide nearly all the narrative of impiety cases and the only statements of what charges alleged.
What it cannot show — Forensic speeches are advocacy and misrepresent by design; the Socratic apologies are literary defences by friends; Livy and Plutarch write centuries after the events they describe and use sources we cannot check. No speech survives from a prosecutor in any famous impiety case, and no jury ever explained itself.
Inscriptions
The Athenian confiscation stelai of the 410s and the bronze senatorial decree on the Bacchanalia are contemporary official documents that fix what actually happened administratively — who lost what, and what precisely was forbidden.
What it cannot show — They record outcomes and rules, not reasons. The stelai list property without saying what any individual did; the bronze prescribes without explaining, so the motive attributed to it always comes from elsewhere. Both are damaged and the stelai survive as fragments covering only part of the condemned.
Papyri
The sacrifice certificates of AD 250 from Egypt show at the level of individual paperwork what the imperial state actually required of a subject: a witnessed act performed before named commissioners.
What it cannot show — They are confined to Egypt and to a single edict, tell us nothing about how the requirement was enforced elsewhere or against whom, and cannot show what the people who obtained them thought they were doing.
Archaeology
Herm monuments survive in numbers and show what kind of object was attacked in 415 — a stone shaft with a head and genitals, standing unguarded in doorways and public spaces.
What it cannot show — No surviving herm can be tied to the mutilation of 415. The archaeology establishes the class of monument and its ubiquity; it contributes nothing to the event, and any damaged example must not be presented as a relic of that night.
What the sources do not record
No Athenian statute defining asebeia survives. Every modern account of the offence's scope is reconstructed from speeches delivered by interested parties, and the reconstruction is contested.
Athenian juries gave no reasons and kept no record of deliberation. We never learn why anyone voted as they did in any impiety case, including the most famous one.
We possess no defence speech as delivered from a celebrated impiety trial. Plato's and Xenophon's versions of Socrates' defence are compositions, written years afterwards by his associates for readers, not transcripts.
Acquittals, withdrawn suits and cases settled before trial are almost entirely invisible. The record preserves the sensational and the politically consequential, which systematically overstates how often such charges were brought and how often they succeeded.
What was profaned in 415 cannot be described, because the content of the Eleusinian Mysteries was never written down. We can say that a rite was performed in the wrong place before the wrong people; we cannot say what the rite consisted of, and no ancient source tells us.
What the evidence supports
The accusations of 415 produced real convictions with real consequences, and what those consequences were: itemised auction of land, produce, slaves and household goods.
The Attic Stelai (IG I³ 421-430), inscribed about 414 or 413 BC, recording the sale of property confiscated from those condemned over the mutilation of the herms and the profanation of the Mysteries (Athens; the fragments are associated with the Agora and the Eleusinion). Twelve of the thirty-three men named by Andocides over the Mysteries and four of his twenty-two herm-mutilators appear on the surviving fragments.
The oldest surviving senatorial decree in Latin, and the only contemporary document of the affair.
The bronze tablet inscribed with the senatorial decree on the Bacchanalia (CIL I² 581), 186 BC, found in 1640 at Tiriolo in Calabria, now in the Kunsthistorisches Museum, Vienna (Ager Teuranus, Bruttium (modern Tiriolo), southern Italy). It restricts rather than abolishes: no shrines, no male priest, no common fund or officers, a ceiling on participants, and prior authorization by the urban praetor and the Senate with a quorum requirement.
When the imperial state did impose a religious requirement on the population at large, it required and certified a performed act — sacrificing, tasting and pouring a libation before named commissioners who signed as witnesses.
Papyrus certificates of sacrifice issued under Decius in AD 250, of which more than forty are published from Egypt (Oxyrhynchus, Theadelphia and other sites in Roman Egypt).
The physical character and public exposure of the objects attacked in 415 — unguarded, ubiquitous, and belonging to households and streets rather than to enclosed sanctuaries, which is why the mutilation could be read as an organized act.
Herm monuments: stone shafts with a bearded head and genitals, standing at doorways, boundaries and crossroads (Athens and Attica, and Greek sites generally).
Stories told about the rite
Ancient writers offered these as explaining the practice. They are evidence for what the tradition said about itself, and they are not the origin of anything: each is given with the author who tells it and the distance between the two.
- Evidence level: Mythological
Aeschylus, Eumenides, staged at Athens in 458 BC, at a moment when the powers of the Areopagus were politically contentious.
Athena founded the homicide court on the Areopagus to try Orestes, casting the deciding vote for acquittal and settling the Erinyes in Athens as honoured residents.
Offered as explaining — Why Athens judged bloodshed where and as it did, and why the city could claim its judicial handling of sacred offences had divine sanction.
A dramatic foundation story for a functioning institution, produced in the middle of an argument about that institution. It supplies prestige and precedent; it supplies no date and no historical origin.
- Evidence level: Mythological
Livy, writing under Augustus, about 160 years after the events.
Bacchic rites were brought to Etruria and then to Rome by an obscure Greek itinerant, and were corrupted into criminality when a Campanian priestess admitted men, moved the meetings to night and multiplied their frequency.
Offered as explaining — Why the Senate had to intervene in 186 BC, and why a cult that had existed in Italy for generations suddenly required suppression.
This is the classic case where the aition must be kept apart from the document. The contemporary bronze decree regulates shrines, priests, funds, officers and numbers; it says nothing about any of Livy's crimes or founders. Livy's account explains the measure to a later readership rather than reporting its cause.
- Evidence level: Mythological
Livy under Augustus; also Plutarch around AD 100, drawing on the annalistic tradition.
Numa established the pontifical college and the whole ordering of Roman public rites, so that authority over sacra descended from the founding of the city.
Offered as explaining — Why the priestly colleges, and not any assembly or court, held interpretive authority over Roman cult.
A charter for institutional authority. It explains why Romans deferred to the colleges; it does not document how those bodies acquired their competences, several of which are demonstrably later developments.
Vocabulary
- asebeia
- Greek: impiety — the failure to render what is owed to gods, the dead, parents or suppliants, and by extension damage to sacred things. Actionable at Athens, but nowhere defined in a surviving statute.
- graphe
- Greek: a public suit, which any qualified citizen could bring on behalf of the community, as against a dike, a private action available only to the injured party. Impiety was prosecuted as a graphe.
- ho boulomenos
- Greek: 'whoever wishes' — the standing formula for the volunteer prosecutor in a public suit. There was no state prosecutor, so who brought a charge, and why, is always part of the evidence.
- nomizein tous theous
- Greek: the phrase in the Socratic indictment, covering both acknowledging that gods are and observing them as custom requires. Its exact force is the central unresolved question in the case.
- archon basileus
- Greek: the 'king archon', the annual Athenian magistrate who inherited the sacral duties of kingship, supervised the ancestral rites and the Mysteries, and conducted the preliminary hearings in impiety and homicide cases.
- hierosylia
- Greek: temple robbery, the theft of consecrated property. Treated as a distinct and severely punished offence, and a reminder that much of what was policed was property.
- atimia
- Greek: loss of civic rights — the inability to speak in the assembly, sit on juries, or enter sanctuaries and the agora. A standard penalty, and the sanction that made exclusion from cult a legal disability rather than a spiritual state.
- sacrilegium
- Latin: the removal of a sacred object from a sacred place, and by extension violation of what belongs to the gods. A property offence in origin, later broadened.
Contested points
What did the indictment's phrase about not acknowledging the city's gods actually allege?
One reading takes the verb in a propositional sense — that Socrates was charged with denying that the city's gods exist — and points to the way both Plato and Xenophon go on to argue about whether he thought there were gods. The competing reading takes the verb in its customary-usage sense: that he failed to observe the gods in the manner established, which is an allegation about conduct and participation. A third position holds that the two senses were not distinct for an Athenian, since acknowledging a god consisted in giving it its due, so that the modern question is malformed. The disagreement matters directly for whether Athens can be said to have prosecuted belief, and it is not settled.
Was the prosecution of Socrates really about religion?
One line emphasises the political setting: the reconciliation agreement of 403 BC barred prosecution for conduct under the oligarchy, and Socrates' known associations with men who had led it could not be attacked directly, so an impiety charge served as the available instrument. The opposing line argues that this makes the religious charge a mere pretext without warrant, that Athenians took cultic offences seriously in their own right, that the new-divinities allegation fits things Socrates was actually known for, and that treating the charge as a cover is itself a way of refusing to believe the sources. The two are not fully exclusive, and much recent work treats the charge as both genuinely religious and politically usable.
Did the Decree of Diopeithes exist?
Plutarch is the only ancient source for it, writing some five centuries after the alleged date, and he uses it to frame an attack on Pericles through Anaxagoras. Sceptics note the single late attestation, the suspicious neatness of its fit to the anecdote, and the possibility that the whole tradition of persecuted intellectuals at Athens derives from comedy and Hellenistic biography rather than from records. Defenders observe that Athens plainly did legislate on cultic matters and that a measure enabling denunciations is not implausible in the 430s. Nothing contemporary attests it, and it should never be cited as established Athenian law.
Where this comes from
Plato, Apology 24b-c
Has Socrates recite the indictment against him: that he does wrong by corrupting the young and by not acknowledging the gods the city acknowledges but other new divinities.
Xenophon, Memorabilia 1.1.1
Opens by stating the charge in almost the same terms — that Socrates did not acknowledge the gods the city acknowledged, introduced other new divinities, and corrupted the young — and immediately begins arguing that the evidence was against it.
Diogenes Laertius, Lives of the Eminent Philosophers 2.40
Gives the text of the sworn indictment, naming Meletus son of Meletus of Pitthos as prosecutor and Socrates son of Sophroniscus of Alopece as defendant, with the penalty proposed as death, and reports on the authority of Favorinus that the document was still preserved in the Metroon.
Thucydides, History of the Peloponnesian War 6.27-29
Describes the mutilation of most of the city's herms in a single night before the Sicilian expedition, the offer of immunity to informers, the resulting denunciations concerning the Mysteries, the political construction placed on the affair, and Alcibiades' unsuccessful demand to be tried at once.
Andocides, On the Mysteries (Oration 1)
Andocides' own defence, delivered around 400 or 399 BC, against exclusion from sanctuaries arising from the affairs of 415. It narrates the denunciations, names those accused over both the herms and the Mysteries, and is the single richest source for the episode — written by an implicated party defending himself.
Lysias, On the Sekos (Oration 7, conventionally titled On the Olive Stump)
A defence against the charge of removing the sekos of a sacred olive from leased land — the term denotes either the stump or the enclosure protecting it, and which is disputed — arguing from the improbability of the act and the absence of witnesses. Shows an impiety prosecution turning entirely on a physical act and the evidence for it.
Covered elsewhere
- The trial of Socrates and the Delphic mission. The book page owns the charge of impiety and corrupting the young, the god at Delphi calling him wisest, and the obey-the-god framing. Only the unanalysed legal content of asebeia is genuinely open.
How to read the evidence labels
- Evidence level: Documented
- Supported by a named primary text or by excavated material evidence.
- Evidence level: Probable
- Supported by strong inference that most specialists accept.
- Evidence level: Disputed
- Substantial specialist disagreement exists; competing readings are stated.
- Evidence level: Literary
- Belongs to poetic or mythological construction rather than to history.
- Evidence level: Mythological
- Belongs to shared religious or mythic tradition rather than to any single text.
- Evidence level: Unknown
- The available evidence is insufficient to decide.
These labels describe the status of the evidence, not our confidence in a conclusion. A claim marked Literary is not a claim we doubt; it is a claim about what kind of thing a poem is.