The Soul Oath is inviolable. Sure, some can deceive their own soul, thus cheating the Soul Oath, but there's no way someone as straightforward as Ange could succeed in doing it. This requires skill on par with someone like Anthony.
As for the Lord of Terror? Such subpar skills, only reaching the level of standard demonic tricks.
So the Goddess of Redemption was booted out, narrowly escaping with her life.
...
"So this is the inside of the Holy Kingdom. Turns out you must take the Celestial Staircase to get in. And here I was thinking about digging a hole," meditated Negris as he just emerged from the Celestial Staircase.
The Holy Kingdom is an inverted semi-circle, hanging over the Resting Abyss, its flat side covered in structures. Squares, temples, all on this plain, surrounded by a protruding barrier that makes it a perfect circle.
They'd never been inside this 'bowl' before because they couldn't find an entrance. Was it solid?