Demas, in the New Testament, companion who forsook Paul.

Demas, mentioned in the New Testament, appears to have been a man who was a Christian, who was involved in the ministry of the gospel of Christ as a companion of the Apostle Paul, but who later turned his back on the faith. He was with Paul during his first imprisonment in Rome, but later when Paul wrote Second Timothy he said "Demas had forsaken him, having loved this present world." See , ,

In The Pilgrim's Progress, John Bunyan writes of Demas, a deceiver, who beckons to pilgrims at the Hill Lucre to come and join in the supposed silver mining going on there.