Demas is mentioned in three of the canonical Pauline epistles:
- In Philemon he is mentioned as a "fellow worker".[Philemon 1:24]
- In Colossians he is mentioned along with Luke (the physician and writer of the Gospel of Luke and Acts).[Colossians 4:14]
- In Second Timothy, a letter traditionally ascribed to Paul, where it is mentioned that "...for Demas, because he loved this world, he has deserted me and has gone to Thessalonica."[2 Timothy 4:10a] This has led to one commentator to describe Demas as 'Paul's Judas'.
Demas is also mentioned in the non-canonical Acts of Paul and Thecla, where he is described as holding views similar to the author of Second Peter. Based on this, Dale Martin speculates that whichever one of the Acts of Paul and Thecla and the Pastoral Epistles (including Second Timothy) was written later may have been arguing against the other.
In The Pilgrim's Progress, John Bunyan writes of Demas, a deceiver, who beckons to pilgrims at the Hill Lucre, urging them to join in the supposed silver mining being carried out there. Interestingly, Demas is described in Pilgrim's Progress as a fellow pilgrim, just like Paul describes Demas as a "fellow worker." In Pilgrim's Progress you can also see that he has a love for early treasures caused him to desert the path and could lead to his death just like Demas's love for the world caused him to stop following God, and eventually lose his salvation.
- MacArthur, John F. (2004). The Book on Leadership. Thomas Nelson. pp. 198–199. ISBN 9781418513375.
- Phillips, John (2007). Exploring People of the New Testament. Kregel. pp. 414–415. ISBN 9780825433870.
- Dale Martin 2009 (lecture). on YouTube. Yale University. Accessed October 5, 2016. Lecture 20 (transcript)
- Twomey, Jay (2009). The Pastoral Epistles Through the Centuries. John Wiley & Sons. p. 186. ISBN 9781444306217. Retrieved 3 October 2014.