Because the Bible is God’s inerrant, authoritative, sufficient, and sole source of His divine word of truth, every other truth rests on that truth. It is not that the inerrancy of Scripture is a more important truth than, say, the deity of Christ or the Trinity. But it is only from the truth of Scripture that we can know all other truths. God’s word of truth in Scripture is the source and measure not only of all spiritual and moral truth but of all truth of any sort on which it speaks.