User blog comment:B214/Question and Answers 6/@comment-37402804-20181104095558/@comment-28884330-20181104170532

God is dead because this is a setting with all mythologies being real. Being omnipotent in your own mythology is super common, so in a setting with all of them being real the God of the Bible is not special. The Boosted Gear makes Issei strong just because he has a dragon stronger than the God of the Bible in it. It's literally explained as early as Volume 1 and Season 1.

Devils do not take souls in DxD, they only did so in the past, and Rias did not let Issei die. That's a misconception based on anime original segments. And Issei does pick everyone, he gets a harem. This is already fact.