"Then I won't let them take you," Crowley says. He sees Aziraphale's vulnerability and wants to make him not fear it. He wants to show him that he can protect him, that he can stop this. Of course, he couldn't exactly stop the apocalypse itself, could he? Aziraphale led the armies that stopped all of this from continuing.

Aziraphale's idea could be a smart one. An angel in Hell could do a lot of damage, especially if they weren't expecting it. But an angel in Hell could also be hurt very badly very, very fast. Crowley keeps thinking if he can just keep Aziraphale safe, keep him from getting caught at all----well, then it won't matter, will it?

"We can stop them," he says. "We have the whole human race on our side. They can't defeat all of them."