User blog comment:B214/Volume 22 spoilers/@comment-86.153.129.0-20160806153723/@comment-9595671-20160806162058

I think that's plausible, I mean ever since the talk with Zekram in Volume 18 I can't really see him as a god guy, even more so after the King Piece's existence was exposed. It makes him saying Sairaorg and Issei should become Satans seem much more malicious and sinister, like it's hiding a darker motive.

I wouldn't put it past him if he knew the true reason Cleria was killed at the time, which could be why Bedeze attacked the Bael family in the first place to try placing the blame of them. This could be why they want Issei to run ExE, because he'd be too busy to be a Satan and not be sucked such motives.