It happens here. Somethin' do to with how there's all these different worlds an' timelines. There's a lot of versions of the same person.
[He looks upwards for a moment, squinting against the light]
It's all just happened for him. The other me. C'n feel it. He's still a bit... it's like when you put new batteries in a torch, an' it's all really bright. He's all bright. The power's all there, just... waiting. He knows what it c'n do, and what he has to be careful of, but ... feels like he still wants to play a bit.
Learn what he can do somewhere new.
[It's odd, feeling all this from someone who is himself and yet not himself. He looks down, and then to Aziraphale, smiling]
This way, then. Follow Dog, he'll find it, won't you boy?
[Dog gives a bark of agreement. Of course he'll find the demon's place.]