My encounter with the Devil

I've decided to quote this story from the middle of what I wrote:

I then realized that I had night-vision on the scope. I could flick it on, but my courage seemed to fail me. It was a good three hundred meters away from me, but I could sense its power, its ferocity, its wildness. My hands moved without telling my brain. Click. The safety’s off. Click. And a there’s a high-pitched whine as the night-vision turns on. I freeze.
I pray and pray. I listen for the rustle. All I can seem to hear is the inaudible whining of the night vision as it gives me away. I hear no rustling. I concentrate all my control to my right eye, and it opens. I bring it up to the scope and look through. I can’t comprehend what I see; a creature, standing on its hind legs, walking with a slight forward lean. There are massive horns atop its head, and a tail that sways back and forth as it walks. Diablo. Its eyes were two bright green spots on my scope, scanning back and forth as I followed it. I couldn’t see the face, but I wouldn’t be able to bear it. I was already losing control of myself, my body wanting to fly from where I was, my mind trying to shut itself off and pass out. My eyes, wanting to fade-to-black and be rid of such a horrid sight… but I couldn’t.
Without consciously thinking about it, my sight went down to its back. Muscles spewed from every angle. I locked on to where the heart should be. I noticed my hand on the trigger. It would be a clean shot. I could get a nice hit. Perfect angle, no wind, no twigs, nothing. Maybe this was divine. A perfect lined shot to take out this unholy creature. It was facing away from me.
I have five bullets in the magazine. I would have to manually load the bullets after each shot, but I could get off all five shots theoretically, before it could get me… if it ran like a bear. I started to hear voices inside my head. They told me to take the shot. Shoot it. Rid the world of such an abomination. The devil, with his back turned to you, unaware. You have a shot. Take the shot. The voices never got above a whisper. They did not consume me. They were merely suggestive, and I still had control of my own actions. It would not be long before it would be out of range.
I watched its muscles move as it walked. Flex and unflex, flex and unflex.
But I couldn’t do it. I felt my hand loosen up and switch on the safety. I followed its figure until it was out of sight, turning off the night vision. I couldn’t feel anything, my entire body was numb. I struggled for breath. I felt hot tears steaming down my face as I closed in my eyes in prayer. I was muttering gibberish, but I needed to be in prayer. That was the only thing that could save me.
I felt myself repeat the words, “How can you shoot the devil in the back? What if you miss?”