I say no to HBoEP, as it was kind of an "extra" spell being offered to him by ThorSpeak.
I'm not sure about heal, unless we can construe his diagnosis of Roy's multiple poisonings or the face the Draketooth clan has mummified.
For listen, that's Origin of PC's: "High wisdom means a decent untrained listen check".
For Know!Rel, Comic #52 shows he has some ranks, but not maxxed and not enough to identify his Deity's enemy.
I can't recall where Speak (Giant) comes from.