It was a fair question to ask, and honestly, he was surprised it hadn't been asked sooner. "Partly because I want to know I can." He was rummaging under the counter for a pocket-knife. He'd killed and skinned small animals before; this would be nothing new. "Partly because if I do something for you, it will in theory lessen any lingering wish to squash me like a bug, should such a wish exist." He stopped, and considered his words more carefully as he gave the last reason. "I also understand suffering very well." And it was not a lie, it was not an act, that the fallen angel suffered. He'd been through enough suffering of his own to want to erase it all, even if it was impossible.