Acts 17:9

9. Taken security The security was probably a pledge or bail of money, forfeitable if any disturbance occurred. And as the Jews could raise the needed disturbance whenever the apostle again attempted to preach, it was clear that his operations in Thessalonica were at an end. This SECOND EUROPEAN CHURCH has had a distinguished history during the Christian ages.

For centuries Thessalonica was the bulwark against the Turkish assaults, and the lamp whence went forth a Christianizing light over the northern barbarians. The eminence of her bishops, her Christian literature, and her theological science, acquired her the title of “The Orthodox City.”