User blog comment:B214/Talk About What You Want! 2/@comment-75.105.131.164-20140727002147

"God of the bible" created sacred gears. His arch nemises (in DxD, in my opinion), Lucifer has a child (Rizevim) that  negates sacred gears. Was Rizevim created to counter sacred gears? Are Sirzechs and Ajuka being Super Devil's also due to Lucifer's efforts to counter "God of the bible"? And are there more suprises from Lucifer yet to be revealed?

Vol 18 may address this. But I am at the mercy of Code-Zero's translations.