There's a reason why the prophet is deigned a protector. It is his job to speak with God, not to fight for God. That was Gabriel's job, and so William knows he's in trouble when he feels the dagger being kicked from his hand. That was his only defence, and in reality the mirror hadn't intended to get this kind of reaction. Sure, bickering was fine, but suddenly it's much clearer that he is in a shit load of trouble.

The knee to his diaphragm has the mirror winching, breath leaving him in a whoosh and leaving William little time to do nothing more than allow himself to get pinned down. Was this meant to happen? William isn't sure, one moment he was briefly victorious in inflicting a wound, the next and he's in the worst position ever, Gabriel's heavy weight keeping him neatly pinned to the ground. Right now he would give anything to have his own Gabriel back, at least the "mirror" Gabriel wasn't such an asshole.

Despite the violence and pain of his arm being twisted, William can't help but be somewhat hypnotized by it all. His own would never ever raise a hand to him, yet here was his double doing just that. Not that he gets to think on it too long, feeling the bones in his arm just about creaking. Teeth are grit hard enough to grind, William doing everything he can not to make any kind of noise. He won't give the archangel the satisfaction, and if he dies here then so be it. That thought alone is enough to have William glaring at the other, expression nothing but silent defiance.