Textual and historical sources regarding the composition of the four canonical gospels include internal textual relationships, external fragments from early church writers, and modern academic source hypotheses.
Early External and Patristic Source
Papias of Hierapolis (c. 60–130 AD) Preserved in Eusebius’ Church History, Papias provided early testimony that Mark recorded Peter’s memoirs accurately and that Matthew compiled the sayings of Jesus in a Hebrew/Aramaic dialect.
Irenaeus of Lyons (c. 180 AD)
write Against Heresies, explicitly defending the fourfold gospel framework and attributing the texts to Matthew, Mark, Luke, and John.
The Muratorian Fragment (late 2nd century) The earliest surviving canonical list of New Testament writings, naming Luke as Paul's companion and confirming the status of John, Matthew, and Mark.
Papyrus 52 (\(\mathfrak{P}^{52}\))
The oldest known physical fragment of a New Testament text, containing a few lines from the Gospel of John and dated paleographically to the first half of the 2nd century.
Academic Four-Source Hypothesis
The predominant scholarly solution to the Synoptic Problem, which proposes that Mark was written first, and that both Matthew and Luke utilized Mark alongside a hypothetical lost sayings collection designated as Q (Quelle), plus independent material sources (M for Matthew, L for Luke
Eyewitness Testimony Analysis