What does Acts 19:26 mean?
The craftsmen of Ephesus are worried. They make their living by selling idols and shrines, particularly for the goddess Artemis. About three years before (Acts 20:31), Paul came to town and started teaching about Jesus: the God who heals people, frees them from demons, forgives their sins, and will live with His followers forever in paradise. Most vexingly, Jesus is fully God and fully man, but His followers don't worship His image, they just worship Him.This isn't good for idol-makers. Led by the silversmith Demetrius, the craftsmen join for a marketing campaign. They decide to start a protest to remind the city that they are defined by Artemis worship. The protest nearly turns into a riot, but Paul leaves (Acts 19:28—20:1).
Asia is the province in western modern-day Turkey. It encompasses all the cities of Revelation 2—3. When Paul came to Ephesus from Galatia, he likely traveled through Colossae and Laodicea and may have taken a detour to Hierapolis, but the churches in those cities were planted by Epaphras (Colossians 1:7–8; 2:1; 4:12–14). The Bible doesn't mention Paul traveling around Asia during his stay in Ephesus, but he might have. The message he preaches about Jesus certainly covers all of Asia (Acts 19:10).