Unless, of course, this universal enemy within doesn't pertain to you, therefore admitting you're a deluded, flaming hypocrite, it's amazing you start out by saying that the Christian can't be trusted for some skewed, misplaced notion we don't trust ourselves to be sane and a misunderstanding of theological depravity, but that you must necessarily, in contrast, fancy that you can trust yourself. Not that flaming hypocrite, right? Yet now you've morphed into that we have an enemy within we can't trust? How do you account for your enemy within that you're trusting, instead of God, that refuses any outside help? You're like an alcoholic who won't admit he has a problem, accusing the sober people of being drunks. Sure, you can handle your sin and evil, right?
Nice little quip, this "enemy within" thing, worthy of your identity, that may belong on the back of a cereal box, in an episode of Star Trek or be the "quote for the day" in a newspaper, but hardly standing the test of reason, by you contradicting your own claims, nor relevant to the deeper ditch you keep digging around yourself. You're beginning to appear the troll, who can't keep things straight across a few screens and fewer posts. You're beginning to become amusing, but too mildly so.
I have a novel idea for your time, and this for about the third time, is it? Logoff and go read the New Testament, do something about your enemy within, to keep yourself out of hell, recognize the true tragedy your heart stopping would be, in the middle of another irrational comment.