User blog comment:Jopjopjop/Volume 18 Spoilers/@comment-16281343-20140619173248/@comment-1359322-20140620003244

Like i said, it just meant that any evil/perverted wish that is directed towards Gabriel is unattainable even through Ophis, that's how hard it is for Issei. Well 天罰 aside, the girls probably won't even allow Issei to attain that dream, so Issei had best give up.