User blog comment:Xilinoc/Ch. 655 - THE MIRACLE/@comment-26091912-20151211100714

Ok, so I've come up with a theory as to what the true nature of The Miracle is.

Based on what was shown 8 chapters ago, when Gerard stretched his cape out to block the Shinigami's path, it looks like The Miracle has something to do with amplification; both his body, abilities, and objects can be 'amplified'.

So for instance, if he's facing off against someone that can outrun him, he can use The Miracle to amplify his leg strength and speed to then be able to outrun that person many times over. Or if he's having a sword fight, he can use The Miracle to absorb the energy from the clashes to amplify the strength, speed, and precision of his sword strikes.

And, if he can use Heilig Pfeil, shoot really fast, powerful arrows in rapid succession. Surely he can do at least that much. That's what I'm hoping for.