“When you calmly think about the fact that the Son of God was crucified on the cross, you will realize that a normal human wouldn’t normally be able to kill the Son of God. That’d be quite a tall order even for me. At certain times in the scriptures, the ‘order of precedence’ is changed. For instance, in order for the Son of God to take on all of humanity’s ‘original sin’, the natural precedence had to be changed so that he could be killed by a normal human.”

[...]

This basically meant that if “Terra’s body” was given precedence over the “wires”, his body would remain unscathed. If the “blade made of flour” was given precedence over the “outer wall”, the blade was able to destroy the walls with ease. If the “air” was given precedence over the “spear”, Itsuwa’s attack would stop in midair.

“Strength and weakness mean nothing before me. I can just alter the order of the two after all.”

Toaru Majutsu no Index Volume 14, pg 124, 125