Regardless of the theory of inspiration one ascribes to, the Dictation or Dynamical theory, neither theory allows for any denial of the inerrancy and infallibility of Scripture. Any admittance of any error in the Bible undermines the Bible’s authority by calling into question its divine inspiration.
If the Bible is not inspired in one place, how can we be assured that it is inspired in other places? If the Bible is wrong about one thing, how do we know it is not wrong about other things? If some of Paul’s writings were just his opinions, how do we know that the Ten Commandments were not just Moses’ idea?
To question the Bible at all is to question all of the Bible. As Ravi Zacharias has aptly put it: “The Bible is the Word of God, and God cannot err. So, to deny inerrancy, rightly understood, is to attack the very character of God. Those who deny inerrancy, soon enter the dangerous terrain of denying all Scriptural authority for both doctrine and practice.”