There exists today a beetle called the bombardier beetle. Why that name? Because it bombards its enemies with a boiling hot toxic liquid; almost like a flame strike of beetle proportions!

The science of the method:
The bombardier beetle builds up two liquids in separate sacks: hydrogen peroxide and hydro-quinone (a chemical used in photography development). When a predator is about to eat the beetle, it lets the two liquids combine in a mixing chamber, closes off the chamber from its body side (so that the explosion goes out, not in), and then adds the key ingredient: a catalyst (from small little pockets around the explosion chamber).

If you try to mix hydrogen peroxide and hydro-quinone, nothing will happen (maybe over time you'll come up with a lot of water and a little quinone). It's the catalyst that speeds up the reaction that allows the beetle to have this "flame strike."

So, hopefully, this will give you confidence that when God says that Leviathan spued forth sparks, you'll be able to trully believe Him!