"I am afraid that they are expecting some one to come and help them," answered the woman. "Or perhaps they have pick-locks in their pockets, and hope to open the doors with them and escape."
"Well, I never thought of that," said the giant. "To-morrow morning I will search them."
Now, a little before day, Christian sprang up quickly and cried out, "What a fool I am! Here I am lying in this dungeon when I might as well be walking at liberty. I have a key here in my bosom. It is called Promise, and I'm quite sure it will open any lock in Doubting Castle."
"That's good news, brother," said Hopeful. "Try it, and let us see what it will do."
Christian took the key from his bosom and began to try at the dungeon door. Quickly the bolts moved back, and the door opened.
Then Christian and Hopeful both went out; and when they had come to the outer door of the castle, they unlocked that also.
They crossed the courtyard softly, and came to the great iron gate. Christian fitted the key into the lock, but it took all his strength to turn it. At length they pushed the gate open; but it made such a creaking
