Castiel knew what Sam was facing. He knew and he couldn't be shy about it. He'd seen it, been there. He closed his eyes and slipped inside.
"Sam," he whispered. It was a new variation on the usual these. Sam had to have been so locked in pain he wouldn't know how to wake. Cas moved closer. Lucifer didn't see him, was only a shadow, couldn't come close. Just a construct of the dream. He had no power over Cas.
"Sam," he said again and carefully took the young man's hand. "It's time to come with me Sam. Come home with me.