the hobbit chapter 12

Everything Bilbo has done and experienced thus far on his adventure pertains to his "names":

“I come from under the hill, and under the hills and over the hills my paths led. And through the air, I am he that walks unseen.

I am the clue-finder, the web-cutter, the stinging fly. I was chosen for the lucky number.

I am he that buries his friends alive and drowns them and draws them alive again from the water. I came from the end of a bag, but no bag went over me.

I am the friend of bears and the guest of eagles. I am Ringwinner and Luckwearer; and I am Barrel-rider.”