we need the BoM (Book of Mormon) because the Bible has missing parts, and the BoM gives us additional information about the gospel

John 10:16 says 
 
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd. 
 
Here Christ states that other people shall hear his voice.  
 
Christ is our Savior and Redeemer. If he says something to someone wouldn't you want to know about it or wouldn't you think it would be important enough to write it down for others to read?

There are over 4,200 religions in the world, most with their own holy books which followers of those religions usually regard as the divine revelations of some one person or more than one person. (That person or those persons are sometimes known, and sometimes not.) 
 
Scholars have documented the history as to how some of those holy books containing somebody\'s or somebodies\' \"divine revelations\" came into being in their current forms sometimes after selections from different documents, additions/deletions, interpretations, translations/mistranslations by many known/unknown people. 
 
With regard to the Bible, the Bibles of Protestant Churches, Roman Catholic Church, Eastern Catholic Church, Eastern Orthodox Church, Oriental Orthodox Church, and LDS Church are different. \"The Tanach\" --the holy book of Judaism-- is different from the Old Testaments of Christian Churches; and the Old Testaments (and New Testaments) of Christian Churches too are not the same.

That is an interesting question, I've often wondered what other churches believe on this subject. To my mind, the answer seems pretty simple. If the Bible is the only word of God, then we are to believe that God has never, and will never say anything else. Ever. Right?  
 
So, I think about my life, prayers that have been answered, understandings that have come to my mind. Things that I've known, important things, that I know came to me from God, because I could not have received them any other way.  
 
In those moments (and the more I think about them, the more I seem to find)I believe that God has spoken to me. That he has sent his spirit to be with me. And then I go home, and I write the things that I have learned. It helps me to remember, and to understand more clearly the things God wants from me.  
 
I believe that I am not unique in this.  
 
So what does that mean about the Bible? That it isn't true? Of course not. Does it mean that my inspiration couldn't have come from God? No. And what if someone else were to read my journal, and feel that same spirit, and learn something new, or understand something differently in a way that draws them nearer to the Lord? Does that make them sacrilegious? No. 
 
To me, it means that God still loves us. God still teaches us. God still wants us to succeed, that he has always been, and will always be, an active figure in our lives, and in our salvation.  
 
That is what modern revelation is about. And yes, the Book of Mormon is a big part of that. Not because it's all different from the Bible, and not because it's all the same, but because it works together with the Bible to reinforce the things that are most important to the Kingdom of God, and to clarify things that may have been misunderstood because of translation, or incorrect traditions, or from Satan being just plain tricky.  
 
The Book of Mormon works hand in hand with the Bible to clarify God's plan for us, and to teach us how to perfect our lives and draw closer to Him. And ultimately return to be with Him again. 
 
I know the verse in Revelations 22:18, that says:  
 
"If any man shall add unto these things, God shall add unto him the plagues that are written in this book" 
 
But it seems to me that there are at least two different ways to understand it. One way, is to say that the Bible is it. God will never say any more. Period. But I like the other way better. To me, it reads like this: 
 
God endorses this book. It is scripture. It is sacred. And anything you do to try to change it, (leave out the parts you don't like, or re-word it so that God's teachings line up more with your personal beliefs) is unfathomably wrong, as it will lead generations after you astray. We should seek to change our will to be more like Gods, not try to change God's words to our way of thinking. No matter how good or bad our intentions are, the only one who has the right to clarify God's teaching, is God. And by extension, the person to whom God entrusts that work.  
 
So, yes, the Bible is good. But God has so much more in store for us. So many great blessings he wants us to have, (including everything the Book of Mormon has to offer). But if you tell God, "I'm done listening," then you limit what he can do for you.

God gives us so many chances... He forgives us over and over(of course only when we truly ask for it)... He shows us how He works in many small things... if God gives us so many chances and tries so hard to show us that He is truly with us... well why wouldn\'t He give us additional info. that He is truly real... mean the book of mormon or other scriptures

Do any of you know anything about metals? The steel weapons mentioned in the BOM would have been way out of a mesoamerican socities' ability to construct. But in the nature of discussion, taking enough iron and coal ( you have to get the carbon levels correct for decent steel) out of te earth to arm this many men would have left evidence, collapsed mine shafts if nothing else.

Jason, 
 
Here are a couple of references for you: 
 
http://www.fairlds.org/FAIR_Brochures/Anachronisms4.pdf 
 
http://www.fairlds.org/apol/ai267.html