Holiness is not really a moral category in the Bible. Holiness is nothing more than "other"ness. It is the infinite qualitative distinction. Holiness later took on a moral cloak, but at base it's not there. Paul says, "Come ye out and be ye separate [i.e. holy] and touch not the unclean thing and you will be the children of God." This is not the language of morality. It is ceremonial language.
That's a distinction not even many Christian pastors comprehend; if you don't study and grasp the original languages, it's easy to lose. Instead, we get the Latin/Western legalism that views holiness as crossing every t and dotting every i, having all your ducks in a row, and such.
"Set apart" is a good translation when applied to people; "otherness" is an excellent one for when it's applied to God.
It is, though, much more than ceremonial language; it gets into the ontological, addressing the very being of the entity to which it is applied. To an extent, in the Old Testament set of writings it foreshadows the New Testament call for repentance, which calls not just for the simplistic admission of having sinned, but for a surrender of one's current being and reception of a new (to make use of a Greek philosophical term) essence.
Of course the Bible is contradictory. Kuli had to explain to me a contradiction I proposed from the sixth century prophets. (He didn't convince me, but he had to explain it.) There were even some shifts in discursive fields over the time the Bible was being written. The writers sometimes end up writing past each other. I guess I see a much greater continuity between the Old and New Testaments than you do, but it's not because there are no inconsistencies.
You'll have to remind me of the proposed contradiction to which you refer; I'm not recalling it.
"Writing past each other" -- yeah, in a way, and that arises from different worldviews along with changing covenants. This is one reason I'm not comfortable with the designation "Old Testament", which means old covenant, because there's quite a collection of covenants there, and they move from a primitive tit-for-tat relationship to one of changed lives, from jumping through hoops for God (to put it crassly) to going with the flow of His Spirit and becoming like Him.
The continuity between the Old and New Testaments has been described as "seamless" (my memory is saying G. K. Chesterton, but another mental voice isn't so sure). It's a flow, from more "primitive" to more "developed" (evolutionary terms arguably inappropriate), a development of concepts starting with what the culture understood and building a new conceptual framework over the generations.
If you're wanting to describe the biblical god, you have to try to forget everything you thought you knew about God and start fresh. Or perhaps you need to analyze what you "know" about God and discount against it.
Whoa -- been reading the early Fathers? You practically paraphrase the opening of a letter from a rather off-beat (but very honest) apologist to a 'heathen' philosopher friend, with your first sentence above!
But it's true. You especially have to forget all the stuff the fundies and 'evangelicals' say; by being closer than most views, they're also more dangerous because the errors are harder to see -- it's a case of something Lewis presented, that the enemy of the perfect or best is not the utterly flawed and worst, but the almost-perfect, the not-quite best. Our society's worldview on the topic of God wraps together ancient Semitic, Greek, and Latin philosophy with Biblical concepts, resulting in a rather mushy and somewhat nebulous idea that doesn't stand close examination (i.e. it's internally inconsistent).
And ultimately, you know, truth is not measured by non-contradiction. Is there really such a thing as truth anyway? Pilate asked Jesus, "What is truth?" Unfortunately, he didn't wait around for an answer.
Right!
It stands to reason that concepts from (to use a mathematical illustration) a world of more dimensions than we experience are going to appear to conflict, when in fact they don't -- for example, two lines in 3-space can be nowhere near each other, never intersecting, but when translated to 2-space, there they are with a point in common. So a description by a being from 3-space will explain that these lines share nothing, but a being in 2-space will look and say, "Like frak they don't! They intersect!"
BTW, I'm not including paradoxes in this; those are another matter, though also to be expected. Indeed, in some contexts, the word Paul uses for "mystery" demands/includes the concept of paradox.