Where else do you find God's word?
You have a childish knack of framing questions in a twisted fashion: "You say the “Bible” that you have in hand is all of God’s word." Which of course I did not say... "Where else do you find God's word?" God reveals His Word in scripture. Not all the past revelations of His Word are in our hands but I happen to believe He is competent to put in our hands those which He wants us to have for our edification ... but He is not going to put in our hands a lie sprinkled with segments of His Word as the various Mormons 'scriptures' represent.
Last --and it will be last for you-- no book could contain all of God's word, so that strawman is firing up your backside. I believe God is competent enough to reveal His Word wherever and whenever He so chooses for the perfecting of the saints, not the special machinations of an adulterous lying treasure deviner who claimed to 'translate' the King James Bible in order to insert fabricated prophesies of himself after he fabricated the Book of Mormon and other manuscripts he claimed were from God. Where God reveals His Word is totally in His purview and He has opened the scriptures ever since He explained them to us through His incarnation, followed by means of His Holy Spirit, which doesn't include sprinkling it in fabricate Mormon writings and the fertile --possibly demonically directed-- imagination of one Joseph Smith except where Smith or the author of the BM inserted whole sections from the Bible.
You have a nice week now, ya he uh.