Doubting Castle

      Lord, we pray for those imprisoned
         By Despair, who lie in grief;
      Locked in Doubting Castle's dungeon,
         Stripped of hope and its relief.
      Father help them to remember
         In Your promise is the key;
      Now unlock the door that bars them,
         In the Gospel, set them free.

(from "A Prayer for Pilgrims" by Ken Puls)