Castiel looks up at Sam, relief in his eyes. He had been worrying about it, but had not been able to bring it up in front of Zachariah. He walked in here thinking his arrival had endangered someone - and while hearing this hardly makes it all well and good, it certainly assuages his guilt.

"I believed it at first. Thank you for letting me know... Your work is important." They walk side by side, arms occasionally brushing. "What rules will I have to follow, living here? I'd appreciate being able to avoid stepping on toes."