Thallus, Phlegon, and the Darkness Reports

The evidence explained

Julius Africanus, writing around AD 221, quotes an earlier historian named Thallus, whose work is otherwise lost, as having explained the darkness at the crucifixion as a solar eclipse, a claim Africanus rejects because Passover falls at full moon, when a solar eclipse is astronomically impossible. Africanus's citation is preserved only secondhand, through later excerptors, and Thallus's original date and context are debated: some scholars place him in the mid-first century, which would make this an extraordinarily early non-Christian reference to the crucifixion tradition, while others argue the identification and dating are too uncertain to bear much weight.

A similar but separately transmitted reference to Phlegon of Tralles, a second-century Greek chronicler, appears in the writings of Origen and later Eusebius, crediting Phlegon with recording a great eclipse and earthquake in Bithynia during the reign of Tiberius. Origen treats this as corroboration of the gospel darkness, though Phlegon himself, so far as the fragments show, made no connection to Jesus; he was simply recording an unusual astronomical or seismic event from a chronicle of Olympiads.

The evidential force of these fragments is inherently limited by their transmission: neither Thallus's nor Phlegon's original texts survive, and both are known only through Christian apologists who had an obvious interest in finding external corroboration. Historians such as Richard Carrier have argued the fragments are too ambiguous and too mediated to establish that any pagan historian was responding to the Christian darkness tradition specifically, while defenders such as Paul Maier argue the citations, though secondhand, reflect a real memory of an anomalous event that entered wider Mediterranean chronicle-writing independent of Christian sources.

Even granting the most favorable reading, the fragments would only support the claim that some unusual atmospheric or seismic phenomenon was noted by pagan historians in roughly the right period; they cannot by themselves establish that this phenomenon was the specific gospel darkness at Golgotha, nor can they be used to date or authenticate the gospel narrative beyond suggesting that a broader memory of anomalous events circulated near the traditional date of the crucifixion.