The noun desmōtērion means prison or place of confinement — literally, the place of bonds. It appears in Matthew's account of John the Baptist in prison (Matthew 11:2), in the account of the apostles' imprisonment in Jerusalem (Acts 5:21), in the Philippian jail episode (Acts 16:26), and in Paul's speech before Agrippa (Acts 26:10). Prisons in the Roman world were often brutal holding places for those awaiting trial or execution.
The desmōtērion appears repeatedly in Acts as the place from which God miraculously delivers his servants. The apostles are imprisoned (Acts 5) and freed by an angel. Peter is freed from prison (Acts 12). Paul and Silas are freed by an earthquake (Acts 16). These prison-break narratives are not merely exciting stories but theological statements: no desmōtērion can hold those whom the Lord has purposed to use. God's word cannot be chained (2 Timothy 2:9). Simultaneously, Jesus declares his mission as 'release to the captives' (Luke 4:18) — the ultimate escape from every spiritual prison through forgiveness and new life.