Brian Zahnd has written a wonderfully clear article on the distinction between biblicism and Christianity, called Scripture as Witness to the Word of God.
I commend it to you in its entirety. As a taste, I present this list of “axiomatic thoughts on Christ and the Bible” with which he opens his post:
The Bible is the word of God that bears witness to the Word of God — Jesus Christ.
The Logos-Word became flesh — not a book.
Jesus is God. The Bible is not.
The Bible did not create the Heavens and Earth — the Word (Christ) did.
We worship Jesus; we do not worship the Bible.
The Bible is not a member of the Trinity.
The Bible is not God. Jesus is God.
The Bible is not perfect. (There are parts of it we now regard as obsolete; e.g. Levitical codes.)
Christ is the perfection of God as a human being.
What the Bible does infallibly is point us to Jesus Christ.
There is one mediator between God and man…and it’s not the Bible.
The Bible is the inspired witness to the true Word of God who is Jesus Christ.
Zahnd stresses the importance of maintaining this distinction by reminding us: “Biblicism can be a clever way of avoiding the rule of Christ in order to maintain the status quo. It is the living Word to whom we must submit our lives.”