Good Thief or Penitent Thief, in the New Testament, the malefactor crucified with Jesus who did not revile Him; Jesus promised him Paradise that day. In the Roman martyrology his feast is Mar. 25. His name in tradition is Dismas or Desmas, that of the other thief Gesmas.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.