Jack: Why? Why did you do that?
Castiel: Because I made a promise. Because I love you, Jack. And Sam and Dean… they love you. And they are fighting for you at this very minute. I hope that… They don’t need to know what happened here. What I did… I’m… I’m… I’m at peace with my choice. I don’t want them to worry.
Jack: I won’t tell them. I promise.
From Supernatural – Season 14 Episode 8: ‘Byzantium’ (14×08)
