What does Acts 14:24 mean?

This is the home-going end of Paul and Barnabas' first missionary journey (Acts 13:1–3). They started with John Mark, Barnabas' cousin, in Syrian Antioch, on the northeast coast of the Mediterranean Sea. From the harbor in Seleucia, they sailed to Salamis on the eastern end of the island of Cyprus. In Paphos, on the western end, they introduced the proconsul, Sergius Paulus, to Christ and rescued him from the influence of a Jewish false prophet (Acts 13:4–12).

From Paphos, the three sailed north to Perga, where John Mark left them. Paul and Barnabas traveled north to Pisidian Antioch, possibly by request of Sergius Paulus who had family there. As they continued east, spreading Jesus' message, they met increasing levels of persecution, climaxing in Lystra where the local people stoned Paul and left him for dead. After going as far east as Derbe, Paul and Barnabas returned to the churches they'd established, encouraging them and appointing elders who could take over leadership (Acts 13:13—14:23).

Now, Paul and Barnabas have returned to the coast. Pisidia is a region in western Galatia, home to Pisidian Antioch; Pamphylia is a province south of Galatia, on the south-central coast of Asia Minor where there are good harbors, including Attalia (Acts 14:25). Paul will revisit the churches in Galatia on his second and third missionary voyages (Acts 16:1–6; 18:23), but there's no record he will return to Pamphylia. Although he may see it when sailing past the coast on his voyage to prison in Rome (Acts 27:5).