The basis for the doctrine of biblical inerrancy is located both in the nature of God and in the Bible's teaching about itself. First, if God is perfect – all knowing, all wise, all-good – it follows that God speaks the truth. God does not tell lies; God is not ignorant. God's Word is thus free from all error arising either from conscious deceit or unconscious ignorance. Such is the unanimous confession of the Psalmist, the prophets, the Lord Jesus and the apostles. Second, the Bible presents itself as the Word of God written. Thus, in addition to its humanity (which is never denied), the Bible also enjoys the privileges and prerogatives of its status as God's Word. God's Word is thus wholly reliable, a trustworthy guide to reality, a light unto our path.
Vanhoozer deals with the oft repeated claim that BB Warfield virtually invented the doctrine of Biblical inerrancy, by demonstrating that the Church in all ages has accepted the total reliability of the Bible. He charges those who find errors in the Bible with exegetical insensitivity. It is often the case that those who argue for an errant Bible interpret texts in a hopelessly wooden way without regard for the context, intention or literary genre of the passage.
All your words are true; all your righteous laws are eternal.