Satan's Arrival

Today you were cleaning around the Church, picking up knocked down candles, then you were cleaning dishes

The current drama, that being Ren Okumura, Satan's son, was being kicked out to protect himself from further harm against demons.

Now you are watching to make sure he's safe, then suddenly when Ren's leaving

Shiro drops to his knees, as if possessed (to which he was). Satan took control of Shiro's body and Shiro laughed, obviously Satan took full control of the priest because it was no longer like him, sure he looked the same but you could see it, when he started spewing blue flames.