What Are the Gospels and Why Do They Matter?
Posted by Brother Oscar

Four voices telling one story no single voice could hold
In the second century, the Christian writer Tatian created an extraordinary work from Matthew, Mark, Luke, and John. Known as the Diatessaron — “through four” or “out of four” — it wove Gospel material into a single continuous account. It became especially influential in Syriac-speaking Christianity and circulated for centuries. Yet it did not replace Matthew, Mark, Luke, and John as the enduring canonical form of the Gospel in the wider Church. By the late second century, Irenaeus of Lyons was explicitly defending a fourfold Gospel, and later manuscript evidence shows the four accounts being transmitted together while remaining distinct.
That history tells us something important about what the Gospels are. They are not four drafts waiting for an editor to produce the ideal version. They are four distinct accounts of Jesus Christ whose similarities and differences have remained visible inside the Christian canon. This article explains what kind of writings they are, what can responsibly be said about their authorship and dates, why Matthew, Mark, and Luke overlap so closely, how John differs, and why Christianity preserved four canonical Gospels rather than one harmonized narrative.
The Gospels are the first four books of the New Testament — Matthew, Mark, Luke, and John — proclaiming the life, teaching, death, and resurrection of Jesus Christ from four distinct literary and theological perspectives. The English word “gospel” derives from Old English gōdspel, “good news,” corresponding to the Greek euangelion. The New Testament comes to us through a Greek manuscript tradition, while the wider biblical library also preserves Hebrew and Aramaic; What Languages Was the Bible Written In? will examine that linguistic world in detail. For the broader structure in which these four books belong, What Is the Bible? A Complete Christian Guide is the parent guide to this Scripture series.

Are the Gospels Biographies?
The answer depends on what we mean by “biography.” The Gospels are not modern biographies. They do not attempt to document every stage of Jesus' life, provide a continuous chronology, or reconstruct his psychological development in the way a contemporary biographer might. Mark begins with Jesus as an adult. Matthew and Luke include different infancy narratives. John begins instead with a theological prologue that reaches back to creation.
At the same time, many scholars compare the Gospels with forms of ancient Greco-Roman biography, because they organize remembered words and deeds around the identity and significance of a central person. Calling them proclamation and calling them ancient biography are therefore not mutually exclusive. The evangelists proclaim who Jesus is by narrating what he said and did, above all his death and resurrection.
The Gospels are also selective. John says explicitly that Jesus did many other things not written in his book (John 20:30; 21:25). Luke's prologue acknowledges earlier accounts and traditions before presenting his own orderly narrative (Luke 1:1–4). Each evangelist arranges inherited material for theological and pastoral purposes. That does not mean we can confidently reconstruct a single “community” behind every editorial decision; it means the Gospels are crafted narratives, not raw transcripts.
Who Wrote the Gospels, and When?
The Gospel narratives do not identify their authors by name inside the body of the text. Ancient Christian tradition associates them with Matthew, Mark, Luke, and John, and those names became the stable titles under which the books circulated. Modern scholarship continues to debate how those traditional attributions relate to the composition and final form of each Gospel. A responsible guide can present both the ancient tradition and the mainstream scholarly discussion without pretending either question is simpler than it is.

| Gospel | Ancient Christian Attribution | Common Scholarly Date | Distinctive Emphasis |
|---|---|---|---|
| Mark | Mark, associated with Peter | Often c. AD 65–75 | Urgent narrative focused strongly on Jesus' ministry, suffering, and death |
| Matthew | Matthew the apostle | Often c. AD 80–90 | Strong engagement with Israel's Scriptures and extensive teaching material |
| Luke | Luke, associated with Paul | Often c. AD 80–90 | Orderly narrative continued in Acts, with sustained attention to prayer, the Spirit, outsiders, and salvation |
| John | John, associated with the beloved disciple and apostolic tradition | Often c. AD 90–100 | Distinctive signs, discourses, and explicit reflection on Jesus' identity |
These dates are approximate, not facts printed on the manuscripts. Some scholars argue for earlier dates, and proposals about the composition of John in particular can involve several stages. Markan priority — the view that Mark was the earliest of the Synoptic Gospels and was used by Matthew and Luke — remains the majority scholarly position, but even that should be described as a historical hypothesis supported by literary evidence rather than an article of Christian faith.
Manuscripts provide a different kind of evidence. The famous Rylands fragment of John, usually designated P52, preserves a few verses from John 18 and is an important early witness to the Gospel's circulation. Its exact date cannot be fixed to a single year; palaeographic estimates have ranged more widely than the once-popular shorthand “about AD 125.” Its value lies not in giving us John's publication date but in showing how early manuscript evidence can illuminate the transmission of the Gospels. How Was the Bible Written and Preserved? will take up the larger story of manuscripts, copying, textual variants, and transmission.
The Synoptic Gospels and the Puzzle of Their Similarities
Matthew, Mark, and Luke are called the Synoptic Gospels because they share so much material, sequence, and wording that they can be placed in parallel columns and “seen together.” Their relationship creates what scholars call the Synoptic Problem: how do we explain passages that are sometimes nearly identical and other passages that differ significantly?
The majority view is Markan priority: Mark was written first and Matthew and Luke used Mark when composing their own accounts. One influential version of this explanation, the Two-Source Hypothesis, also proposes a lost sayings source conventionally called Q — from German Quelle, “source” — to explain material shared by Matthew and Luke but absent from Mark. No manuscript of Q has been discovered, and not all scholars accept that it existed as a single document. Other models, including the Farrer hypothesis, explain the same evidence without Q.
The larger point is secure even while the exact literary model remains debated: the evangelists worked within a world where traditions about Jesus were already being remembered, taught, transmitted, and written. Luke says as much in his opening verses, referring to earlier narratives and traditions handed down by eyewitnesses and ministers of the word. Literary dependence, where it occurred, was not plagiarism in the modern sense; ancient authors regularly worked with existing sources.

Four Portraits of the Same Life
Matthew engages Israel's Scriptures with particular intensity. Its repeated fulfillment formulas, extended teaching discourses, genealogy beginning with Abraham, and presentation of Jesus as teacher and Messiah give the Gospel a strongly Jewish scriptural horizon. The Sermon on the Mount is central, but describing Jesus simply as a “new Moses giving a new law” can flatten Matthew's richer relationship with Torah; the Gospel presents both continuity and authoritative interpretation. The Greek Scriptures used throughout the early Christian world are central to this wider context, which What Is the Septuagint? will examine separately.
Mark is the shortest Gospel and moves rapidly through Jesus' public ministry. Its frequent use of “immediately,” compressed scenes, secrecy motifs, misunderstandings among the disciples, and sustained movement toward Jerusalem give the narrative unusual urgency. Mark has no infancy narrative: it begins with John the Baptist and Jesus' baptism and devotes a large proportion of its final chapters to the Passion.
Luke opens by acknowledging earlier accounts and explaining that the author has followed the tradition carefully in order to write an orderly narrative for Theophilus (Luke 1:1–4). Luke gives sustained attention to prayer, the Holy Spirit, the poor, women, sinners, Samaritans, and other people at social or religious margins. It alone preserves the Good Samaritan and the Prodigal Son, while its infancy narrative gives shepherds a memorable place in the story.
John differs substantially from the Synoptics in chronology, structure, vocabulary, and the form of Jesus' teaching. It contains no infancy narrative and few short Synoptic-style parables. Instead, it opens with a prologue identifying Jesus as the eternal Logos, the Word:
"In the beginning was the Word, and the Word was with God, and the Word was God."
— John 1:1
John explicitly calls a sequence of Jesus' works “signs,” beginning at Cana, and includes extended discourses and memorable “I am” sayings. The traditional shorthand of “seven signs” is useful in many Christian presentations, although scholars count and organize the signs in different ways. John's distinctive form should not be reduced to “where the Synoptics show, John explains”; all four Gospels both narrate and interpret Jesus.

Why the Church Kept Four Instead of One
Tatian's Diatessaron shows that some early Christians found a single continuous Gospel useful. Its long influence in Syriac Christianity also means we should not tell the story as though the whole Church gathered, considered Tatian's proposal, and formally voted it down. Canon formation was much less tidy than that. What we can say is that the four separate Gospels ultimately became normative across the major Christian traditions, while harmonies remained secondary forms of reading.
By around AD 180, Irenaeus of Lyons offers one of the clearest early defenses of exactly four authoritative Gospels. His famous argument uses symbolic imagery — four regions of the world, four winds, and the four living creatures — which can sound strange to modern readers. More historically important is the fact that he treats Matthew, Mark, Luke, and John as a fourfold Gospel and argues against Christian groups that privileged fewer or additional accounts. The fourfold collection was becoming a defining feature of catholic Christianity.
Preserving four accounts also preserves evidence that a harmony necessarily edits away. Matthew and Luke can be compared rather than silently merged. John's chronology can stand beside the Synoptic chronology. Different wording, ordering, and emphasis remain visible to readers and scholars. Christians have therefore inherited not one seamless biography but a canonical conversation: four accounts whose shared confession of Jesus is heard through four distinctive literary voices. The larger question of how these four books became part of a recognized New Testament belongs to How Was the Biblical Canon Formed?.

The Geography of the Gospels
The Gospel narratives are deeply rooted in the geography of Roman Judea and Galilee. Nazareth, the Jordan River, Capernaum, the Sea of Galilee, villages around the lake, the road toward Jerusalem, the Mount of Olives, and Jerusalem itself repeatedly shape the movement of Jesus' ministry. The Gospels also reach beyond that core landscape — into Samaria, the region of Tyre and Sidon, the Decapolis, and other neighboring territories.
Capernaum receives particular prominence in the Synoptic tradition as a major center of Jesus' Galilean activity, while Matthew explicitly describes him settling there (Matthew 4:13). The Sermon on the Mount is set by Matthew on “the mountain,” but the Gospel does not name the precise hill. The modern Mount of Beatitudes is a Christian pilgrimage tradition associated with the sermon rather than an archaeologically demonstrated location. Distinguishing biblical text, later tradition, and archaeological evidence makes the Holy Land connection stronger, not weaker.
All four Passion narratives converge on Jerusalem, though they differ in chronology and detail. Places such as the Mount of Olives and Gethsemane belong directly to the Gospel narratives; other modern identifications depend on later Christian tradition and historical investigation. Reading the Gospels alongside the geography of the Holy Land helps readers understand distances, terrain, political boundaries, and the physical settings the evangelists assume. The Lands of the Bible: Geography of the Old and New Testaments will expand that map beyond the Gospel heartland to the wider biblical world.

Closing Reflection
Tatian's Diatessaron reminds us that Christians have long felt the attraction of a single continuous story of Jesus. Yet the canonical New Testament asks readers to do something less tidy: read Matthew beside Mark, Luke beside John, and allow both the agreements and the differences to remain visible.
That fourfold form matters. Matthew's engagement with Israel's Scriptures, Mark's compressed movement toward the cross, Luke's carefully ordered two-volume story, and John's distinctive signs and discourses are not interchangeable. Together they became the Church's canonical witness to Jesus Christ. The result is not one modern biography repeated four times, but four ancient Gospel narratives that continue to be read together in Christian worship, theology, scholarship, and prayer.
Sources and Further Reading
- USCCB — Introduction to the Gospel of Matthew — The Catholic Bishops' Conference's scholarly introduction to Matthew's authorship, dating, and themes.
- Encyclopaedia Britannica — Gospel (New Testament) — A scholarly overview of the Gospels' origin, genre, and the Synoptic problem.
- Pontifical Biblical Commission — Instruction on the Historical Truth of the Gospels — The Catholic Church's official guidance on how to read the Gospels as historically grounded proclamation.
- John Rylands Library — Papyrus 52 — Background on an important early manuscript fragment of John's Gospel and the palaeographic questions surrounding its date.
Frequently Asked Questions
What are the four Gospels in the Bible?
The four canonical Gospels are Matthew, Mark, Luke, and John, the opening books of the New Testament that proclaim the life, teaching, death, and resurrection of Jesus Christ. They overlap substantially while also preserving distinctive material and theological emphasis.
Why are there four Gospels instead of one?
Early Christians knew attempts to combine Gospel material, most famously Tatian's second-century Diatessaron, but Matthew, Mark, Luke, and John remained distinct and became the Church's canonical fourfold Gospel. By the late second century, Irenaeus explicitly defended exactly four authoritative Gospels.
Which Gospel was written first?
Markan priority is the majority view in modern scholarship, with Mark commonly dated around AD 65–75 and Matthew and Luke often placed later in the first century. John is also commonly dated toward the end of the first century. These dates remain approximate and debated.
Who actually wrote the Gospels?
Ancient Christian tradition associates the four Gospels with Matthew, Mark, Luke, and John. The narratives themselves do not identify their authors by name, and modern scholarship debates how the traditional attributions relate to each Gospel's composition and final form.
What is the difference between the Synoptic Gospels and John?
Matthew, Mark, and Luke share extensive material, sequence, and wording and are therefore called the Synoptic Gospels. John differs substantially in chronology, structure, vocabulary, signs, and extended discourses, while sharing the same central focus on Jesus' ministry, death, and resurrection.
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