Derbe is a city in Lycaonia.
Acts 14:6they learned of it and fled to Lycaonia, to the cities of Lystra and Derbe and the surrounding region,
Paul visited this place during his first missionary journey and preached there.
Acts 14:21After preaching the gospel in that city and making many disciples, they returned to Lystra, Iconium and Antioch,
He also visited this place during his second missionary journey.