A woman possessed by a demon begins to follow Paul and his party, calling them "servants of the Most High God" (verses 16-17). Though this is true, it greatly distresses Paul because the Jews might conclude that he consorted with soothsayers, unlawful according to Leviticus 19:31; 20:6; and Deuteronomy 18:9-14. From their point of view, the Gentiles might consider the religion Paul preached to be as pagan as all the other religions of the time. Thus, Paul commands the demon to leave the woman in the name of Jesus Christ (Acts 16:18).
Her employers, who made quite a profit by her fortune telling, are not pleased because her supernatural abilities disappeared with the demon. So they haul Paul and Silas before the city courts (verse 18).
Notice this very interesting source—a demon. They know that there is a way! It does not say "the ways"—plural—but "the way."
John W. Ritenbaugh
The Covenants, Grace, and Law (Part 2)
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