None of the Gospels name their author in the original text, they were written decades after Jesus's death by people who were not eyewitnesses, in a different language than Jesus spoke, and the traditional attributions to Matthew, Mark, Luke, and John were added later by the church for credibility.

Why people find it persuasive

It is true that the earliest manuscripts do not contain an author's signature within the running text the way a modern memoir would, the Gospels were written in Greek rather than Jesus's Aramaic, and even conservative datings place Mark around 70 AD, forty years after the crucifixion, which is a long gap by the standard of firsthand reportage.

Important distinctions

• • Internal authorial signature vs. external and manuscript-title attribution
• • Anonymous composition vs. universally and uniformly attributed composition from the earliest testimony
• • Written decades later vs. based on earlier oral and written sources
• • Forty years after events vs. within living memory of eyewitnesses and their students

Christian response

• • It is accurate that the Gospel texts do not contain a first-person 'I, Matthew, write this,' but this was a common feature of ancient biographical writing, not a mark of fraud; many respected ancient histories followed similar conventions. Crucially, the manuscript tradition is remarkably uniform: every surviving early manuscript that includes a title attributes the same Gospel to the same author, with no competing attributions circulating, which is different from documents whose authorship was genuinely contested in antiquity, like the pastoral epistles.
• • The external testimony for these attributions is also very early and geographically dispersed: Papias, writing around 110 AD and citing information from the generation of the apostles' own disciples, already identifies Mark as recording Peter's teaching and Matthew as compiling sayings of Jesus; Irenaeus around 180 AD attributes all four Gospels to their traditional authors as an uncontroversial fact already established in his time. This kind of early, unanimous, cross-regional attribution is unusual for a forgery, since forged attributions in antiquity typically provoked competing claims and disputes, which these did not.
• • A forty-year gap, while real, is not actually unusual for reliable ancient history; Plutarch wrote his Lives of famous Romans a century or more after his subjects lived and is still used as a primary historical source, and the Gospels were written within the lifetime of people who could have contradicted them publicly, including hostile witnesses among the Jewish and Roman authorities who had every motive to refute a fabricated account, yet no such refutation survives. Furthermore, scholars widely agree the Gospels drew on earlier oral tradition and written sources, including the hypothesized sayings source Q, and creedal material like 1 Corinthians 15's list of resurrection appearances, dated to within five years of the crucifixion, which pushes the effective evidentiary base much earlier than the final composition date.
• • None of this proves the Gospels are inerrant transcripts, and critical scholars are right to weigh authorship questions carefully rather than accept tradition uncritically; conservative and moderate scholars like Richard Bauckham in Jesus and the Eyewitnesses have made detailed arguments for eyewitness connections behind the Gospels, while scholars like Ehrman remain more skeptical, and this is a genuine, ongoing academic debate rather than one obviously settled in either direction.

Christian counterresponse

The theist can respond that literary dependence and theological shaping are compatible with substantial historical reliability, in the same way that modern historians using and editing each other's sources while writing for a particular audience does not thereby make their work fictional, and ancient biography routinely selected and arranged material for thematic purposes without inventing it.