Thanks for all the help, billberg!
What does repulse me a bit is the idea of mutilating the human body to tout one belief system or another. Once in a while, we find a gem of wisdom in the Bible.
I don't guess I'd be getting a tattoo so much to "tout" my belief system (I'm a Christian if you haven't gathered that by now) as to "immortalize" (sort of) something that means a great deal to me, much like having a painting done and hanging it up in my house. I do believe the verse containing this phrase is a "gem" and was one of the most profound things Jesus said in the Bible. I also think it would end up being something that would remind me of my trust in Him every time I see it, and would also be--in some situations--a great witnessing tool (e.g. for others with tattoos). At any rate, however, I think what you may be referring to is something more along the lines of this:
http://www.tattoos99.com/unhappy-jesus-tattoo-on-shoulder/:) Definitely not my style. The whole idea of getting it in Ancient Greek would be to be much more discreet and leave it to potential conversation for someone to understand what it means. I also would most likely put it somewhere like my chest or back, where people would only see it in certain situations.
Right, I'd have no problem at all with the devil's artwork.
Not to be too presumptuous, but I take it this means you're not a Christian. I've been one since I was 6, but having a very analytical mind (again, not to be too presumptuous, but I would guess you do as well), I have struggled to this day with doubts. However, I think I've finally come up with a very simple, logical "proof" for the validity of Christianity (or at least for why it's the best choice for what to believe in and follow) that has set my mind at ease like never before--and it doesn't even involve an argument on historical facts and figures, archaeology, etc. I'd love to share it with you if you're open it. If not, it was great chatting with you, and hope to run into you again!
BTW, if you don't mind me asking, how'd you get so good at this stuff (tried to view your profile, but it wouldn't let me)?