I have written a few books myself. And in one of the early chapters I may sometimes refer to something which will appear in one of the later chapters, even though I haven't even written that chapter yet. I'm sure the infinitely-wise God also had a plan for the revelation and preservation of His will and did likewise. This interpretation is sometimes heard from those who don't believe all the Bible is inspired. It's useful first , for doctrine or teaching.
Scripture is useful for instruction in righteousness.
And that's the thrust of this message today. Many, many sermons are preached about the inspiration of the Bible. And that's good. In a skeptical and doubtful world like ours, it needs to be affirmed and affirmed again and again over and over. But we may have neglected to emphasize that that inspired volume adequately supplies the Christian for all His work for the Lord.