Gandalf simply smiled cheerfully at Bilbo, thankful that the dwarves didn't do any of the awful things that they had said in the song, or else the hobbit would never agree to go. He counted the dwarves who were present and noticed that there was still one missing. Thorin had still not arrived.

No sooner had Gandalf thought this than there was a loud, thumping knock on the door that made all the other dwarves go silent.