Luke the Evangelist: Paul's Companion and the Narrator of His Mission

Among the companions who travelled with the Apostle Paul, few have shaped how his story is remembered as deeply as Luke — held by tradition to be "the beloved physician," a fellow worker of Paul, and the author of the two-volume work that became the Gospel of Luke and the Acts of the Apostles. Yet almost everything commonly said about him must be sorted carefully into what the New Testament states, what later Christian tradition holds, and what modern scholarship reconstructs. This article gathers what the sources say about Luke through the lens of his association with Paul and with Tarsus, labelling each claim by its evidentiary weight — (Scripture) for what the New Testament text states, (Tradition) for what later Christian tradition holds, and (Scholarship) for the reconstructions of modern historians — and giving dates as ranges, since the chronology of Paul and his circle is a careful reconstruction anchored on only a few fixed points.

A companion named three times

Luke is named in the New Testament in exactly three places, all of them in letters attributed to Paul and all bound up with an imprisonment. In the letter to Philemon he is greeted among Paul's "fellow labourers": "Mark, Aristarchus, Demas, and Luke my fellow labourers" (Philemon 1:24, Douay-Rheims). (Scripture) In Colossians he is given the description that has clung to him ever since: "Luke, the most dear physician, saluteth you" (Colossians 4:14). (Scripture) And in the Second Letter to Timothy the imprisoned writer notes, in a line of great pathos, "Only Luke is with me" (2 Timothy 4:11). (Scripture)

A note of caution belongs here at the outset. Of these three letters, only Philemon is among the seven undisputed letters of Paul; the Pauline authorship of Colossians, and of 2 Timothy (one of the Pastoral Epistles), is questioned by many scholars. (Scholarship) The bare fact that Paul had a co-worker named Luke therefore rests most securely on Philemon; the further detail that he was a physician comes from Colossians, and the moving "only Luke is with me" from a Pastoral. This does not make those details false, but a careful reader should know which claims rest on the firmest ground. Notably, none of the three passages says that Luke wrote anything, and none names his birthplace, his origin, or his death.

The "we-passages"

The strongest internal link between Luke and Paul is not a name at all but a shift of grammar. At several points the narrative of the Acts of the Apostles moves without warning from "they" to "we," as though the writer had joined Paul's party: "And as soon as he had seen the vision, immediately we sought to go into Macedonia, being assured that God had called us to preach the gospel to them" (Acts 16:10). (Scripture) These first-person-plural sections — the so-called we-passages (Acts 16:10–17; 20:5–21:18; 27:1–28:16) — cover parts of the second and third missionary journeys and the sea voyage to Rome, and they read as if the author were personally present for them. (Scripture)

Because the author of Acts never names himself, the identity behind that "we" is an inference. Ancient tradition, reasoning that the companion must be someone named in Paul's letters yet not otherwise prominent in the narrative, settled on Luke. Some modern scholars accept the we-passages as genuine eyewitness memoir supporting Lukan authorship; others read them as a literary convention or the incorporation of an earlier travel diary. (Scholarship) The link between Luke and Paul's journeys is therefore strong but not proven — a reconstruction resting, in the end, on a pronoun.

Author of a Gospel and its sequel

By long tradition Luke is the author of the third Gospel and its companion volume, Acts — a single two-part work addressed to a certain "Theophilus." The Gospel opens: "It seemed good to me also, having diligently attained to all things from the beginning, to write to thee in order, most excellent Theophilus" (Luke 1:3); Acts takes up the thread: "The former treatise I made, O Theophilus, of all things which Jesus began to do and to teach" (Acts 1:1). (Scripture) Together the two books form the largest single contribution to the New Testament by volume, and Acts is the only ancient text that presents Paul's career as a connected biography.

Crucially, both books are anonymous: neither names its author. (Scripture) The attribution to Luke is external and later, appearing in the writings of Irenaeus and in the Muratorian Canon toward the end of the second century. (Tradition) The reasoning behind it was itself an inference: the author of Acts was evidently a companion of Paul (the we-passages), a companion not among the more famous names, and Luke the physician fit the description. (Scholarship) On dating, the Luke–Acts work is usually placed at about AD 80–90, after the Gospel of Luke, though a minority of scholars argue for an earlier date in the 60s. (Scholarship)

History and tradition — a careful line

It is worth drawing the line plainly. What can be said with reasonable confidence is that Paul had a co-worker named Luke (Philemon), described as a physician (Colossians). (Scripture) The identification of that companion with the author of the Luke–Acts work is traditional — attested from the later second century but not stated in either book — though many scholars find it credible and others doubt it, partly because Acts and Paul's own letters diverge on points of detail. (Scholarship)

Beyond this, later tradition fills out a fuller portrait that the New Testament does not supply. Luke is commonly said to have been a gentile (an inference some draw from Colossians 4:11–14, where he appears to be listed apart from Paul's fellow Jews), a native of Antioch in Syria, unmarried, and long-lived; a still later, medieval tradition even makes him a painter of the Virgin Mary. (Tradition) These belong to hagiography and should not be read as history. His own dates are correspondingly uncertain: he was active in the mid-first century, but no year of his birth or death is recorded. (Scholarship)

Why Luke matters for Tarsus

For a reference anchored in Paul's birthplace, Luke carries a particular weight: almost everything known about Paul's link to Tarsus comes through him. It is Acts — the book tradition credits to Luke — that names Paul "a Jew of Tarsus in Cilicia, a citizen of no mean city" (Acts 21:39), that reports his Roman citizenship and his upbringing "at the feet of Gamaliel," and that traces the journeys outward from the missionary base at Antioch. (Scripture) Paul's own letters, rich as they are in autobiography, never once name the city. Whoever the author of Acts was, it is through his narrative that Tarsus enters the story of the Apostle at all — a debt explored further in our reference on the Apostle Paul and, for his first missionary partner, on Barnabas.

That story — of the man from Tarsus and the companions who carried and recorded his mission — is what St Paul Global Week marks. On 28–30 June 2027, around the 29 June Solemnity of Saints Peter and Paul, a faith-tourism gathering organised by Funny Tourism will bring pilgrims to Tarsus and Mersin, in the birthplace of the Apostle, with the Feast Day prayer programme broadcast live worldwide. You are warmly invited to explore the programme, to learn why Tarsus matters, and — for church and community leaders who wish to bring a group — to read about the Hosted Delegation Leaders programme.