I don't use the KJV. I use the Tanack. So no I do not consider it to be G_d's book.

Over all the years the Tanack has had a total of nine letter-differences are found in the scrolls, in all the yrs it has been written. Those 9 did not change the meaning of the Scriptures.

As for the KJV, any translation is going to have some variations unfortunately, this changes the understanding of the intended meaning of the word. When translating from one language to another more than just a word must be taken into consideration of what is meant. For instance one must consider the customs and language usage. Some words can not be translated into an other language simply because one language may not have a word to express the meaning of the other language.