"Sam." Lucifer whispers gently.
...and how can light whisper anyway Sam wonders for the millionth time.
"Sam, let me help you. I can make the pain stop, I promise."
Sam holds back another scream as his body what body- soul, he's just a soul now feels like it's being torn apart molecule by molecule. He's known the withdrawal would be worse than it had ever been if he survived Lucifer, but he hadn't expected to actually survive.
"This must be unbearable for you. Surrounded by demons, by the very thing that could make the hunger stop, but with no way to reach them. I really can help you Sam. I've never lied to you, and I'm not lying now."
Sam can feel Lucifer lift him up gently from where he's curled into a fetal position on the ground what ground... He's propped up in a mostly seated position surrounded by Light the morningstar. An arm, a solar flare, as all of Lucifer is now, wraps around him and his head is pushed gently forwards.
"Drink, Sam. Drink and be whole."
Sam doesn't understand, not really, but it doesn't matter because his mouth is touching the Light and it's fire and it's heat and it's everything. A maelstrom of power and it doesn't stop it doesn't stop
"My father, he has no idea what I've learned, what I'm capable of now. I've had so much time in here Sam. The demons served their purpose. They're more than cannon fodder. They made you possible. And you, you're more than my vessel Sam, you're the other part of me. You're going to do what I never could. You're going to get out of here and you're going to win, Sam."
Sam is in the Cage, he's in Hell, he's in Heaven, he's in ecstasy and the Light is everywhere it's everywhere and so is he. Nothing is hidden, nothing's impossible, and everything around him is just so damn small now.
Lucifer laughs, but he sounds...so...weak.