and Lucifer himself was God's most beautiful angel

I am the assassin against whom no lock can hold.

"Prisoner" would have worked, also.

Why did I think it was prisoner?
Anyway, I found it, in DV02.

--

"And God so hated his only begotten son, that he gave him to the world, that the world might have him."

"Loved."

"What's that?"

"The quotation. And God so loved."

"Do you presume to correct me?"

"N-no. No, my lord."