After Bod finished dealing with the four other Jacks, He went into the Frobisher's mausoleum where Jack Frost held Scarlett hostage.
When Bod reached the bottom of the cave he Faded hoping Jack wouldn't see him. However Jack smelled him out.
I know you are here boy. I can smell you!
Bod tried to inflict fear on Jack, but it didn't work, so he became visible again. He remembers what the Sleer told him to find his name and asks what was his name. However, Jack teases him with random names.
What is my name?
I don't know. Rodrick maybe? *chuckles*
Jack finally realizes the ancient relics on the altar. He starts to get excited about this.
Ooh! What is this?
The man Jack made Bod give him the relics in the hope of making a ceremony for a new convocation
An end of convocation, the beginning of a new one! Give them to me boy!
Jack is about to kill Bod and asks him if he wants to know his name, Bod tells Jack his name is Nobody Owens.
I know my name. I am Nobody Owens. That is who I am.