The Greek adjective dēmosios means 'public,' 'common,' or 'belonging to the people.' It appears in the New Testament in Acts, describing Paul's public teaching ministry — he taught both publicly and from house to house — and the public proclamation of the gospel in the marketplace.
Paul's description of his ministry as 'publicly and from house to house' (Acts 20:20) uses dēmosios to emphasize the unapologetically open nature of his preaching. Unlike mystery religions of the Greco-Roman world that hoarded secret knowledge, the gospel was proclaimed publicly — in synagogues, marketplaces, and public squares. The word's connection to dēmos (the people) emphasizes that the good news belongs to everyone, not just an elite few.