Why do we debate the value of the bible. We both love the bible. If a person said to me deny the bible or I will kill you on the spot, I would say kill me. Would you do the same? Of course you would.
I have always maintained that the bible is the word of God, with some translation problems that I overlook when I read it. JS was given more information about God and Jesus Christ and to me that made sense. You may think that more information is not necessary and that all of it is false. But I believe that after 2,000 years, some of the truth was lost, and needed to be restored again by another prophet of God. So JS was chosen for that restorative event.
If every word he says cannot be found in the bible, it does not immediately disqualify his words. I want you to think about the time of Christ. Jesus was considered by the existing clergy to be a radical rogue religious nut. You know why? Because what he was saying was not in their bible. In fact it was so different from their bible that he was finally put to death.
So after 2,000 years, and the millennium is coming, you would think there could posssible me more information that the Lord would want people to know that was not in the bible because it did not pertain to the people in the Church of Jesus Christ in the First Century, but does pertain to the people in the Church of Jesus Christ of Latter-day Saints.
For instance, from the BOM we realize that Jesus, after his resurrection and ascendance, he visited people in the Americas that were of the house of Israel. That was an important piece of information, that confirms that Jesus is the Christ and worshiped by not only the people in the Jerusalem area, but also in the Americas. Wow, thousands of miles from each other, with no communications possible, but they believe in the same Jesus Christ. Think about that. 2 peoples acknowledge that Jesus is the Christ. Does that work, as the bible says, that by the mouth of 2 witnesses, all thing may be established, even that Jesus lived, and died for the salvation of men on earth. The same testimony from peoples thousands of miles apart with not form of communications? That is incredible, believe it or not, at least acknowledge that this would be more powerful than just 1 witness, the bible.
Sop do not be stuck in just the bible, and say to yourself, I have my bible, I need no other bible, I need no other information about Jesus than the bible. The bible is wonderful, but always remember it is a very few words of Jesus given to men.