User blog comment:General MGD 109/Monster Strength Scale/@comment-87.249.167.240-20121105184228/@comment-3045936-20121107050025

I always thought that the Phoenix, was really just another of her children. BUT, maybe the original wasn't able to harm her, turning humans or breeding with humans over hundreds of thousands of years could have altered them that their ashes would be fatal to her. Another theory is that God made her weakness as a way of keeper her in the details of her arrangment in the Natural Order. After all look at the Leviathans God created them and Purgatory before Angels, Humans, Demons, or Eve's children, and right after sealing them away created a method of killing them?

So by this logic, he knew of the three fallen beings and the righteous mortal requirements for that tablet before he made angels and humans. Yes, God is omniscient and that is my point, so it's not COMPLETELY out their that God himself made the way of killing Eve.