Why are biblicists so unbiblical?
Biblicists tend to transfer properties of God and Christ to the Bible. The Bible is said to be the Word of God, holy, inerrant, infallible, and so on. More sophisticated biblicists acknowledge that though the Bible is written by human beings, it is also the Word of God in the same way that Jesus is fully human and fully divine - which is of course just transferring the teachings on the two natures of Christ to the Bible.
But what does the Bible say?
According the Bible only God is truly holy, inerrant, infallible and so on. Only Christ is the Word of God, and only Christ is fully human and fully divine. The Word of God is not a book, but Christ (Jn 1). The Word of God is living and active (Heb 4:12). This is why the Word of God can do stuff, like cooperating with the Father in creating the world (Genesis 1-2), or coming to people and telling them to do stuff (e.g. Jonah 1).The Bible doesn't do stuff like that.
If the Bible is true, it cannot be the Word of God (which is Jesus, according the Bible). On the other hand, if the Bible is the Word of God, then it cannot be true, since it claims that the Word of God is not the Bible, but Christ.
This doesn't make the Bible a book like any other book, though. The Scriptures are inspired writings which is good for edification and so on (2 Tim 3:16) - which doesn't make it the Word of God. And by the way, when Paul talks about Scriptures he is referring to the Old Testament (the New Testament was, of course, not compiled yet!).
The reason that Scripture must be inspired is that it is a witness to Christ. No one can witness about Christ except by the spirit ("no one can say Jesus is Lord, except by the Holy Spirit." (1 Cor 12:3) - which means conversely that anything that is a witness to Christ must be considered inspired. Hymns, sermons, treatises, tracts, blogposts, whatever, can all in this way have the same status as Scripture, and be good for teaching and edification and so on.
But why are biblicists so unbiblical in their views on the Bible?
Biblicists tend to be selective and dogmatic when reading the Bible. The Bible is taken as a collection of rules and descriptions which can be taken out of their context. The result is moralism. But as any kind of idolatry Biblicism is really a disguised worship of the human self and its ideologies. Thus, Biblicists are often confirmative of so-called "traditional values", they talk a lot about gender roles and homosexuality (which isn't really a topic in most of the Bible).
Whatever we consider holy, that thing will be excepted from scrutiny and critical inquiry. In classical Jewish and Christian theology God is ineffable and incomprehensible, unless he reveals himself. In Biblicism that has been transferred to the Bible.
This is why biblicists are so unbiblical - biblicists don't read the Bible as a witness to Christ by the Spirit, but as the Word of God, to be read in superficial way independently of the story of Christ.
At the end of the day, biblicism is much closer to muslim teachings, than classical Christianity. Both take the properties of Christ as the Word of God and the true revealer of God, and transfer it to their favorite text.
Read about my favorite anti-biblicist here.
