Among the many evidences for verbal inspiration, both within and without Scripture, is the frequent interchange of God recognized as the author of a particular passage with the human author who actually penned it. This can be true only if the very words recorded by the various authors are "God breathed" (the meaning of "inspiration").
For example, the early Christians exclaimed, "Lord, thou art God, which hast made heaven, and earth, and the sea, and all that in them is: Who by the mouth of thy servant David hast said, Why did the heathen rage, and the people imagine vain things?" (Acts 4:24-25), thereby recognizing that God spoke through David, who wrote God's words in Psalm 2:1-2.
Likewise, Paul, in his masterful dissertation on God's sovereignty, claimed "the scripture saith unto Pharaoh" (Romans 9:17) that which God Himself had spoken unto Moses (Exodus 9:13). In other words, what Scripture says, God says.
Even Christ Jesus, who Himself had written with His finger "honour thy father and thy mother" (Exodus 20:12) on tables of stone, personally ascribed the authorship of the passage to Moses (Mark 7:10). Evidently to Christ, there was no difference. That which Moses had written under the inspiration of the Holy Spirit, and in this case what he had copied from the stone tablet, was fully the Word of God.
We can be sure that what Scripture says, God says. "That the man of God may be perfect, throughly furnished unto all good works" (2 Timothy 3:17). We can trust our lives on earth, our view of history, and our eternal destiny to what is written on the pages of Scripture. JDM http://www.icr.org/article/6147/