They did. Again, I wasn't myself, he didn't care.

( But, he also brought this on himself. And he'd do it again, let's be honest. To rescue Lilith to then rescue Lucifer? Maybe? )

If we knew why they took it, and where. I doubt it's for an exhibit. ( Displayed for all of them to see. ) When grace or blood is taken from an angel, it's used, Dean. I'm sorry my guard was down.

( He knows it's not his fault. )

Maybe Lucifer can answer to why it was taken. What they might do with it.