He's been working on his letter to Bastran, but will set it aside to brief the paladins.
He's sure Iomedae has told them plenty about the Empire's current failings. Those failings are real, and very bad, and it's a system that traps even the best of its people on paths where they have no leeway to...choose better options than the default...but the best of its people do, often, genuinely believe in the Empire, and would want it to be better if they saw a way. He thinks it's important they have the context on why.
There was a Cataclysm in his world - a little like the one that happened at the beginning of Aroden's history, but more recent, only seven hundred years ago. The Empire was founded in the rubble and ashes, by a group of dedicated founders who wanted - a lot of the same things Aroden's church wants, he thinks, to build a civilization where no one would starve, where its people could invest in education and invention and discovery. And the Empire isn't not that. It's still the only place in Velgarth that retains much of the advanced magic known before the Mage Wars, like permanent Gates for transport. Its citizens are proud of their home, and Altarrin doesn't think they're wrong to be.
The Empire is also incredibly paranoid and controlling of its people, and intensely distrustful of gods. This is a pattern that causes immense suffering, and it - traps people, it's a lot of why the Empire cannot, as an institution, easily turn away from war now, with Oris or with Aroden's church. But he thinks it's important that they understand why - that it's because the gods of Velgarth have never, once, intervened to support the cause of a flourishing civilization, or to give the Empire more options rather than fewer. It's...a path that goes nowhere good, to ban religion in an entire Empire and execute for treason anyone they catch worshipping a god...but it's a measure that was only taken after it had been observed that where there were priests and temples, people died and projects failed.
He doesn't know why it's like that. But if Aroden had been one of the gods on hand, when the First Emperor took the throne, Altarrin thinks the Empire would have seen the shared ground between them. It was meant to be a place that would be aligned with Aroden. It isn't, and maybe it's too late, but - that's the vision they believed in, once, and many of the Empire's leaders still believe that nowhere else in the world is on a better track.
(He doesn't tell them about his immortality; he's still going back and forth agonizing over whether to tell Bastran, but he doesn't want it dragged out of these people's heads by whichever expendable Thoughtsenser and interrogation team are sent to deal with them, and honestly he doesn't want it spread around Heaven either. His argument feels less coherent and compelling without that, but hopefully they're following anyway.)