Demas (Demus) was a friend and co-worker of Paul. He worked with Paul while Paul was in Rome between A.D. 61-63. He is mentioned in the greetings sent by Paul in the book of Colossians and the book of Philemon. But in Paul's second letter to Timothy, Demas deserts Paul, as Paul writes "Do your best to come to me quickly, for Demas, because he loved this world, has deserted me and has gone to Thessalonica" (2 Tim. 4:9-10a, NIV).