'There's nothing to fear, but fear itself.' Jonathan quotes Franklin D. Roosevelt from time to time, but he himself is a little skeptical of the phrase.
After all, The Scarecrow is definitely something to fear, and it is but a humble servant of fear. The Bat is also at least somewhat scary, but Jonathan would never admit that to anyone. Except maybe Edward, because he at least is smart enough to keep his mouth shut.
Casting a quick glance to you, his latest hostage, reveals information he already knew. You're still out cold, and tied to a rather uncomfortable chair in a rather crappy warehouse.
If it was up to Jonathan, he'd have an entire dungeon full of (mostly) decorative torture devices, and dim lights. But, being a criminal on the run, he has to make do with dingy, falling apart buildings on the outskirts of Gotham.
All the light in the warehouse is coming from the full moonlight creeping in through a hole in the ceiling. It's a relatively cloudless night, and if Joker was around he'd make up some excuse about the full moon bringing out the true lunacy of the city.
Luna-cy. It was an accidental pun, but one that brings a small smile to Jonathan's lips from underneath his Scarecrow mask.
Seeing as you're still out cold, he can afford to drop the Scarecrow persona a little and have some fun setting up the fear toxin needles. Most people are scared of needles, so it works out well.
Maybe a song will provide the appropriate amount of whimsy that he feels must be felt on a night like this.
"God rest ye Merry Gentlemen, let nothing you dismay..." Jonathan's voice rings out softly, but loud enough to fill the warehouse. He lets his southern accent slip a little more than he originally intended, but the only person around to hear him is currently passed out.
As far as he knows anyway, you had in fact, woken up just in time for a personal concert, courtesy of your kidnapper.