Can You Use the Bible as Evidence? (And the Secular Sources for Jesus)
Is it circular to cite the New Testament as historical evidence — and is it really true that the Bible is our only source for Jesus?
How to use this guide
This guide is built for a 45-60 minute small-group conversation about "Can You Use the Bible as Evidence? (And the Secular Sources for Jesus)." Open with prayer, read the framing aloud, and use the questions below to surface what people actually think before you walk through the case. Aim for honest engagement over consensus.
Facilitator tips
- Read the lesson before the meeting; you do not need to be an expert, just a guide.
- Resist the urge to fill silence. The best discussions follow long pauses.
- When someone raises an objection you cannot answer, write it down and follow up next week.
- Close with a single takeaway from each member, not a doctrinal summary.
What we're studying
"You cannot use the Bible to prove the Bible" is the single most repeated move in internet-level skepticism. It sounds devastating, but it rests on a category error: it treats "the Bible" as one indivisible religious book rather than as a library of first-century historical documents that can be examined the way historians examine any ancient source. The second half of the objection — that there is no non-Christian evidence for Jesus — is simply factually wrong. Clearing up both halves removes one of the biggest blockers skeptics hit before any real discussion can start.
The case in brief
Two claims are usually packaged together and both fail. (1) "The Bible cannot be used as evidence." This conflates canonical status with evidentiary status. The New Testament is a collection of 27 first-century documents produced by multiple authors writing in different places, cities, and decades (Paul in the 50s, Mark c. 65-70, Luke-Acts c. 62-85, John c. 90s). Historians treat every ancient text — Tacitus, Josephus, Suetonius, Plutarch — the same way: weigh date, authorship, genre, independence, and corroboration. A document does not stop being a historical witness because someone later bound it between other documents and called the collection sacred. By the skeptic's standard, we could not use Plutarch's Lives on Alexander (a collection of biographies compiled by a single admirer) or Arrian's Anabasis as evidence for Alexander the Great — and we would be left with almost nothing about the ancient world. (2) "There are no non-Christian sources for Jesus." There are. Within roughly a century of the crucifixion we have Josephus (twice — the Antiquities 18 passage in its reconstructed core, and the uncontested Antiquities 20 reference to "James, the brother of Jesus who was called Christ"), Tacitus (Annals 15.44, on "Christus" executed by Pontius Pilate under Tiberius), Pliny the Younger (Letters 10.96, on Christians worshipping Christ "as to a god"), Suetonius (Life of Claudius 25.4, on disturbances instigated by "Chrestus"), Mara bar Serapion (letter referring to "the wise king of the Jews"), Lucian of Samosata (mocking Christian worship of a crucified sage), and the Babylonian Talmud (Sanhedrin 43a, on "Yeshu" being hanged on the eve of Passover). None of these writers was friendly to Christianity; several were openly hostile. Together they independently corroborate that Jesus existed, lived in Palestine, was executed by Pilate, had a following that worshipped him as divine, and that his movement spread rapidly after his death — the exact core of the gospel claims minus the interpretation.
Argument structure
Conclusion: The New Testament is legitimate historical evidence, and it is not the only source for Jesus — the claim that it is is a factual error that collapses under a single afternoon of reading.
- Historians evaluate ancient documents by date, authorship, genre, independence, and corroboration — not by whether they were later collected into a religious canon.
- The New Testament is a library of multiple, independently authored first-century documents, not a single book.
- Ruling out the NT on the grounds that it is religious would also rule out most of what we know about Alexander, Caesar, Socrates, and the Roman emperors.
- Multiple non-Christian sources (Josephus, Tacitus, Pliny, Suetonius, Mara bar Serapion, Lucian, the Talmud) independently attest core facts about Jesus within the first century after his death.
- The correct historical question is not "is the Bible allowed as evidence?" but "what do these documents, weighed like any others, actually show?"
What if someone says...
"But the NT is a religious text, so it plays by different rules."
That is special pleading dressed as methodology. Ancient historians do not apply a "religious penalty" to sources; they weigh each document on date, authorship, genre, and corroboration. If the same content were in a secular archive we would use it without hesitation. The canonical label is a statement about later Christian use, not about first-century provenance.
"Most of this is second-hand or interpolated — it does not count as independent evidence."
Interpolation affects the longer Testimonium, not the other sources. Tacitus, Pliny, Suetonius, and the Talmud are independent traditions written by hostile or indifferent authors with nothing to gain by corroborating Christian claims. In ancient history, hostile attestation to this many core facts — execution under Pilate, rapid spread, divine worship, Jewish opposition — is an unusually strong evidential pattern. It is not proof of the resurrection, but it is conclusive that Jesus existed and the gospel core tracks real events.
"The Bible makes supernatural claims; that is what disqualifies it."
Supernatural content in a source is a reason to scrutinize those specific claims, not to disqualify the entire document from historical use. Livy records omens; Tacitus records prodigies; Josephus records miracles. Historians routinely extract the historical core from sources that contain supernatural material. The rule "no source that mentions miracles counts" is a philosophical commitment (methodological naturalism), not a historical method.
"That is still internal to Christian apologetics."
No — these are the standard historical criteria applied by secular ancient historians to every ancient text. The fact that they produce a strong result when applied to the NT is a conclusion, not a presupposition. The honest skeptical move is to examine what the sources actually show when the usual rules are applied evenly, not to invent a special rule that exempts one set of documents from normal historiography.
Discussion questions
- Before this lesson, did you think "no non-Christian sources mention Jesus"? Where did you get that idea — and what does it say about how claims circulate online?
- Would you accept Plutarch on Alexander, Tacitus on Tiberius, and Arrian on the campaigns of Alexander as evidence? If yes, what principled reason do you have for treating the NT differently?
- If a skeptic refuses to let you cite the NT at all, what do they think historians do? What method do they believe is being violated?
- Hostile-witness testimony (Tacitus, the Talmud, Lucian) agrees with the gospel core on the basic facts of Jesus' life and execution. What is the probability that the core gospel claims are fiction given that pattern?
- [Small group] Where in your own life does this question feel most pressing?
- [Small group] Who do you know that wrestles with this — and how could you talk with them about it this week?
Going deeper
- Antiquities 18.3.3; 20.9.1Josephus · c. AD 93 · Jewish historian
- Annals 15.44Tacitus · c. AD 116 · Roman historian
- Jesus and the EyewitnessesRichard Bauckham · 2006 (rev. 2017) · Gospels as testimony
- The Resurrection of the Son of GodN.T. Wright · 2003 · Resurrection
- The Case for the Resurrection of JesusGary Habermas & Michael Licona · 2004 · Resurrection
- Roman Society and Roman Law in the New TestamentA.N. Sherwin-White · 1963 · Classical history
- The Resurrection of Jesus: A New Historiographical ApproachMichael Licona · 2010 · Resurrection
- Evidence That Demands a VerdictJosh & Sean McDowell · 2017 (rev.) · Evidential apologetics