Paul's Second Missionary Journey (Acts 15:36–18:22)

The Second Missionary Journey of St. Paul (Acts 15:36–18:22, c. AD 49–52) is the expedition on which the gospel, as the Acts of the Apostles records it, first crossed from Asia into Europe. It began not with a plan of conquest but with a pastoral impulse — a wish to revisit the congregations founded on the First Missionary Journey — and it ended, some three years later, having planted churches in Philippi, Thessalonica, Berea, and Corinth, and having produced what most scholars regard as the earliest surviving Christian document, the First Letter to the Thessalonians (Scholarship).

For this library, one stretch of the route matters above all others. The journey's opening land march ran north from Syrian Antioch and then west across Cilicia — through the homeland of Paul himself, past Tarsus, and up through the great mountain pass known as the Cilician Gates. On the First Journey Paul had sailed to Cyprus; on the Second he walked his own native ground. The road through Cilicia is where the journey's story touches the city at the centre of this collection, and it is treated here at proportionate length.

The Parting of Paul and Barnabas (Acts 15:36–41)

The journey opens with a quarrel. After the Council of Jerusalem, Paul proposed to Barnabas that they return and visit the brethren "in all the cities wherein we have preached the word of the Lord" (Acts 15:36, Douay-Rheims). Barnabas wished to bring his cousin John Mark; Paul refused, because Mark had turned back at Perga during the first expedition (Acts 13:13). Acts does not soften the outcome: "there arose a dissension, so that they departed one from another" (Acts 15:39).

The result was two missions instead of one. Barnabas took Mark and sailed to Cyprus, his native island. Paul chose Silas — also called Silvanus, a leading man of the Jerusalem church and, like Paul, a Roman citizen (Acts 16:37) — and set out by land. Acts follows Paul's party from this point and never returns to Barnabas's Cypriot mission.

The narrative passes no verdict on the dispute (Scholarship). Paul's later letters mention Barnabas without rancour (1 Corinthians 9:6), and Mark eventually reappears as a valued co-worker (Colossians 4:10; 2 Timothy 4:11). Church tradition treats the separation as providential: two teams, two directions, twice the ground covered (Tradition).

Through Syria and Cilicia: The Road Past Tarsus

Acts summarizes the first leg in a single verse: "And he went through Syria and Cilicia, confirming the churches" (Acts 15:41, Douay-Rheims). Behind that verse lies a march of several hundred kilometres through a geography this library exists to explain.

From Syrian Antioch the road ran north, crossed the Amanus range by the Syrian Gates (the Belen Pass, in the south of modern Turkey), and descended into the fertile lowland of Cilicia Pedias. The principal city of that plain was Tarsus, Paul's birthplace (Acts 21:39; 22:3), a centre of learning and commerce under Roman rule (see Roman Tarsus). In Paul's day the Cilician plain was administered as part of the Roman province of Syria — Cilicia was not reconstituted as a province in its own right until c. AD 72, under Vespasian — so Tarsus in this period was the regional metropolis of the plain rather than a provincial capital (Scholarship). The great east–west highway passed directly through the city; a traveller going from Antioch to central Asia Minor did not skirt Tarsus, he walked its streets.

The churches that Paul "confirmed" in Syria and Cilicia were almost certainly communities he himself had helped to found. After his escape from Jerusalem, Paul had spent the better part of a decade based in Tarsus and its region (Acts 9:30; Galatians 1:21), years treated in this library's study of Paul's early travels. The Council of Jerusalem had addressed its letter precisely "to the brethren of the Gentiles that are at Antioch, and in Syria and Cilicia" (Acts 15:23) — evidence that Cilician congregations existed and mattered before the Second Journey began (Scripture). When Paul walked through Tarsus in c. AD 49, he was delivering the council's decision to churches that knew him as their own.

North of Tarsus the road climbed into the Taurus Mountains toward the pass the ancients called the Cilician Gates (Pylae Ciliciae), a narrow limestone gorge in places only wide enough for a laden animal. It was, and remains, the principal gateway between the Mediterranean shore of Cilicia and the high Anatolian plateau; armies from the Hittites to Alexander the Great used it, and the Romans engineered and maintained the roadway through it (see the Roman road). For Paul and Silas the Gates were the physical hinge of the journey: below them lay Syria, Cilicia, and Tarsus; above them, the plateau cities of the first mission. Every reconstruction of the Second Journey draws its line on the map within sight of Tarsus and through this pass — Tarsus is not merely Paul's birthplace but a waypoint on the most consequential overland journey of early Christianity. The route can be followed in the library atlas.

Timothy Joins at Lystra (Acts 16:1–5)

Descending onto the plateau, Paul and Silas came first to Derbe and then to Lystra — the reverse of the First Journey's order, exactly as the eastern approach through the Cilician Gates requires. At Lystra, where Paul had once been stoned and left for dead (Acts 14:19), he found a young disciple named Timothy, the son of a believing Jewish mother and a Gentile father (Acts 16:1).

Timothy's local reputation was good, and Paul chose him as a companion, first having him circumcised in view of the Jews of those districts (Acts 16:3) — a pragmatic step usually explained by Timothy's Jewish descent through his mother (Scholarship). Timothy would become Paul's most trusted junior colleague, co-sender of six letters and the addressee of two more.

The party moved on through Iconium and the surrounding cities, delivering the decrees of the Jerusalem council; Acts records that the churches were strengthened in the faith and grew in number daily (Acts 16:5).

The Macedonian Call at Troas (Acts 16:6–10)

What follows is a travel narrative defined by closed doors. Paul's party crossed Phrygia and the Galatian country, but were "forbidden by the Holy Ghost to preach the word in Asia" (Acts 16:6) — Asia being the Roman province whose capital was Ephesus. Turning north toward Bithynia, they were stopped again: Acts says the Spirit of Jesus did not permit them (Acts 16:7). Squeezed between two prohibitions, they angled northwest past Mysia and came down to the coast at Troas, the Roman colony and port near the site of ancient Troy.

There the direction of the whole mission changed. "And a vision was shewed to Paul in the night, which was a man of Macedonia standing and beseeching him, and saying: Pass over into Macedonia, and help us" (Acts 16:9, Douay-Rheims). The party concluded that God had called them to preach across the Aegean, and took ship at once.

At exactly this point the narrative voice of Acts shifts from "they" to "we" (Acts 16:10). These "we" passages — which begin at Troas, pause at Philippi, and resume years later (Acts 20:5) — are traditionally read as the eyewitness memoir of Luke, whom tradition names as the author of Acts (Tradition). Modern scholarship debates whether the first-person sections are a genuine travel diary, an incorporated source, or a literary convention; the diary reading remains widely defended, since the "we" sections are dense with precise nautical and geographical detail (Scholarship). On any reading, the narrative implies that a new companion joined the party at Troas.

Philippi: Lydia and the Jailer (Acts 16:11–40)

A fair wind carried them from Troas via Samothrace to Neapolis in two days, and from the port they walked inland to Philippi, a leading city of that district of Macedonia and a Roman colony (Acts 16:12) — a veteran colony astride the Via Egnatia, the great road linking the Adriatic to Byzantium.

Philippi evidently lacked a synagogue; on the sabbath the missionaries went outside the gate to a riverside place of prayer and spoke to the women gathered there. The first recorded convert on European soil was Lydia, a dealer in purple cloth from Thyatira and a Gentile adherent of the God of Israel, whose heart, Acts says, the Lord opened to receive Paul's message (Acts 16:14). She was baptized with her household and made her home the mission's base.

Trouble came through commerce of another kind. When Paul exorcised a slave girl whose spirit of divination earned money for her owners, they dragged Paul and Silas before the magistrates as Jewish troublemakers; the two were beaten with rods and jailed. At midnight, as they sang in the stocks, an earthquake shook the prison open. The jailer, about to kill himself in the belief that his prisoners had fled, was stopped by Paul, asked what he must do to be saved, and was baptized with his household that same night (Acts 16:25–34).

The next morning Paul produced a fact he had withheld under the rods: he and Silas were Roman citizens, beaten and imprisoned without trial. The alarmed magistrates came in person to apologize and to ask them to leave the city (Acts 16:37–39). The church they left behind — meeting in Lydia's house — became the community to which Paul later wrote the Letter to the Philippians, and the only church from which he accepted repeated financial support (Philippians 4:15–16) (Scripture).

Thessalonica and Berea (Acts 17:1–14)

Following the Via Egnatia west through Amphipolis and Apollonia, the party reached Thessalonica, the largest city of Macedonia and a free city under Rome. For three sabbaths Paul reasoned in the synagogue, arguing from the scriptures that the Messiah had to suffer and rise from the dead, and that Jesus is that Messiah (Acts 17:3). Some Jews believed, along with a great multitude of devout Greeks and not a few leading women.

Opposition formed quickly. A mob dragged Paul's host Jason before the city authorities — Acts calls them politarchs, a title once doubted but since confirmed by inscriptions from the city (Scholarship). The charge: "these all do contrary to the decrees of Caesar, saying that there is another king, Jesus" (Acts 17:7, Douay-Rheims). Jason was bound over, and the brethren sent Paul and Silas away by night.

Some eighty kilometres southwest lay Berea, off the main highway. Acts pays its synagogue a famous compliment: the Bereans "received the word with all eagerness, daily searching the scriptures, whether these things were so" (Acts 17:11) — a verse that made "Berean" a byword for text-testing faith. Many believed, until agitators arrived from Thessalonica and Paul was escorted to the coast and south by sea, leaving Silas and Timothy to consolidate the young churches.

Athens and the Areopagus (Acts 17:16–34)

Paul arrived alone in Athens, the old intellectual capital of Greece — politically diminished under Rome, but still the symbolic home of philosophy. Acts pictures him provoked by the city's forest of idols, arguing in the synagogue and daily in the marketplace, where Epicurean and Stoic philosophers took him for a proclaimer of foreign divinities and brought him to the Areopagus, the venerable council named for the Hill of Ares, to explain himself.

The speech that follows (Acts 17:22–31) is the fullest example in Acts of Paul addressing a pagan, educated audience. He begins not with Scripture but with his hearers' own religion: "I found an altar also, on which was written: To the unknown God. What therefore you worship, without knowing it, that I preach to you" (Acts 17:23, Douay-Rheims). He proclaims the one Creator who needs no temples, quotes Greek poets rather than Hebrew prophets, and only at the end turns to judgment and to a man raised from the dead. At the mention of resurrection the audience fractured: some mocked, some deferred, and a few believed, among them Dionysius the Areopagite and a woman named Damaris (Acts 17:32–34).

Athens yielded a modest harvest by the standards of the journey. Later tradition nevertheless made Dionysius the first bishop of Athens (Tradition), and the Areopagus address became a founding model for Christian engagement with philosophy (Scholarship).

Corinth: Eighteen Months and the Proconsul Gallio (Acts 18:1–17)

From Athens Paul moved west to Corinth, and the journey changed character. Corinth was everything Athens was not: a young Roman colony refounded by Julius Caesar in 44 BC, capital of the province of Achaia, controlling the isthmus between two seas — commercial, polyglot, and carrying an old reputation for vice, though modern scholarship holds that reputation belonged chiefly to the Greek city destroyed in 146 BC and was much exaggerated for the Roman colony of Paul's day (Scholarship). Here Paul stopped travelling and stayed a year and six months (Acts 18:11).

He found lodging and work with Aquila and Priscilla, a Jewish couple lately arrived from Italy "because that Claudius had commanded all Jews to depart from Rome" (Acts 18:2) — an expulsion usually connected with the Roman writer Suetonius's note about disturbances "at the instigation of Chrestus," and dated by many scholars to c. AD 49 (Scholarship). Like Paul they were tentmakers, and the workshop became a mission base. When Silas and Timothy arrived from Macedonia with good news and material support, Paul turned to preaching full-time. Rejected in the synagogue, he moved next door to the house of Titius Justus; Crispus, the ruler of the synagogue, believed with his whole household. In a night vision the Lord told Paul not to fear but to speak on, "for I have much people in this city" (Acts 18:10, Douay-Rheims).

Then comes the sentence on which the chronology of Paul's life is hung: "But when Gallio was proconsul of Achaia, the Jews with one accord rose up against Paul" (Acts 18:12). Lucius Junius Gallio — brother of the philosopher Seneca — is independently attested by a fragmentary inscription found at Delphi, recording a letter of the emperor Claudius that dates Gallio's proconsulship of Achaia to c. AD 51–52 (Scholarship). Since proconsuls normally served a single year, and Acts places Paul in Corinth both before and during Gallio's tenure, the inscription fixes Paul's Corinthian residence to approximately AD 50–52. It is the one point where Pauline chronology touches a securely dated external document, and every "c. AD" in this article ultimately leans on it. Gallio refused to hear the case — a question of Jewish law, not of Roman crime — and drove the accusers from the tribunal (Acts 18:14–16), leaving the mission legally unmolested.

Letters from Corinth: The Thessalonian Correspondence

The Second Journey also marks the beginning of Paul's surviving literary output. Anxious for the persecuted infant church at Thessalonica, Paul had sent Timothy back from Athens; Timothy rejoined him in Corinth with a reassuring report (1 Thessalonians 3:1–6, matching Acts 18:5). Paul's response was the First Letter to the Thessalonians, written from Corinth c. AD 50–51 and regarded by most modern scholars as the oldest extant Christian writing — earlier than any Gospel (Scholarship). Its themes are the journey's themes: gratitude for a church born amid affliction, defence of the missionaries' conduct, and instruction about the return of the Lord.

A second letter to the same church, treating the end times with a different accent, may have followed within months. Church tradition receives 2 Thessalonians as Paul's (Tradition); modern scholarship is divided, some holding it a genuine sequel from the same Corinthian period, others a later composition in Paul's name — a question surveyed in this library's scholarship section (Scholarship).

The Return: Ephesus, Caesarea, Jerusalem, Antioch (Acts 18:18–22)

After the Gallio episode Paul remained yet many days, then sailed for Syria with Priscilla and Aquila, first shaving his head at Cenchreae, Corinth's eastern port, "for he had a vow" (Acts 18:18) — generally understood as a temporary Nazarite-style vow, a reminder that Paul remained an observant Jew (Scholarship). The ship called at Ephesus, where Paul reasoned briefly in the synagogue, declined an invitation to stay, and promised to return "God willing" (Acts 18:21) — a promise the Third Missionary Journey would keep on a grand scale. Priscilla and Aquila stayed behind in Ephesus.

Paul sailed on to Caesarea Maritima, the great Herodian harbour of Judea, and then, as the Douay-Rheims renders it, "went up to Jerusalem, and saluted the church" (Acts 18:22), before coming down at last to Syrian Antioch, the church that had sent him out. The Greek text of the verse does not name the city, saying only that Paul went up and greeted the church; but the ascent from Caesarea is almost universally understood of Jerusalem — one goes up to Jerusalem and down to Antioch — and the Douay-Rheims makes that destination explicit (Scholarship). The journey of roughly three years was complete.

Reading the Journey Whole

Seen on the map, the Second Journey is a single westward arc: Antioch, the Cilician plain and Tarsus, the Cilician Gates, the plateau churches, Troas, and then the run of great European cities — Philippi, Thessalonica, Berea, Athens, Corinth — before the sea road home. Seen in the text, it is a study in redirection: closed doors in Asia and Bithynia funnel the mission to Troas; a night vision turns it toward Macedonia; a proconsul's indifference in Corinth buys it eighteen months of peace. Acts presents the pattern as divine guidance (Scripture); historians note how faithfully the route follows the real arteries of the Roman world — the highway through the Cilician Gates, the Via Egnatia, the sea lanes of the Aegean (Scholarship). Both readings meet on the same roads.

For the visitor who begins where this library begins, in Tarsus, the journey has a particular claim. The city of St. Paul's Well and Cleopatra's Gate is not only where Paul's story starts; it is ground the Second Journey itself crossed — the last familiar place before the mountains, the first act of the road that ended in Corinth. Those tracing the route today may begin with the pilgrimage guide and the companion studies of the First and Third Journeys; questions of dating and sources are treated under method and sources.