I believe . . . I do not understand
If all you have is a personal belief and a lack of understanding, then why should we listen to you?
I believe the KJV is the best English translation of God's preserved infallible word today.
It may have been at some point in the past, but it is definitely not the best translation we have today.
Why do you assume God needs to keep the Bible "infallible" (without error) in order to preserve it?
Why can't He write a book and keep it preserved simply by the nature of how He wrote it?
In other words...
Consider Shakespeare's plays. He wrote his plays in the late 1500s, yet each of them (the ones we have, at least) are still preserved to this day, simply because if part of a play went missing, the whole of the work would be destroyed, though it could probably be reconstructed, for the most part, simply because of the story it tells. By that, I mean that we could look at the story before the missing part, and the story after the missing part, and barring any lost plot twists being missing, we could satisfactorily come up with a recreation of the missing piece of the story.
Human eyes have a blind spot in the top corners of vision, about 2/3 the way from the center of vision to the edge. We don't notice it, usually, because our brain fills in the gap with the data it receives from the rest of the eye.
Our DNA is capable of correcting errors in our genome using its programming.
God is responsible for BOTH of the latter examples here. BOTH of those examples are EXTREMELY complex, compared to the simplicity of writing a book over the course of 1600 years. Do you think God couldn't write a book with error correcting mechanisms, for when errors do creep in? Do you think He couldn't write a book that can fill in the details of certain events where it's not provided within the immediate context?
God wrote a book that tells a story, just like Shakespeare wrote plays that tell a story. The Bible has a plot. It tells the story of the beginning of the world, the creation of man, man's fall, the destruction and preservation of mankind, the choosing of one man to be the father of many, and his grandson who would be the father of an entire nation that was to be separate from the rest of the world, and then it tells the story of that nation's history for the next 1500 years or so, and then the birth of the One who would redeem mankind from the fall, how he was crucified, and how he rose from the dead, and then it tells of a plot twist, how that nation was cut off temporarily, so that the Creator could work with a different group of people, a mystery kept secret since the beginning of the world, but also that the Creator will eventually go back to working with that chosen nation, and when He does, the world will soon end, and man shall live forever with Him.
That message, that story, that plot, has been preserved since it was written, when the authors of the books within the Bible wrote those books. That story has gone unchanged. Yes, the minor details may have been lost, or errors have been made when transcribing those details, and there are plenty of Atheist sites containing lists of all the inconsistencies within the Bible, and most of them are correctly identified, but NONE of those errors, or errata, or inconsistencies, affect the overarching PLOT of the Bible, which is why we can trust that whatever Bible you use (with a couple of exceptions), you can know that it's God's word, because it tells the exact same overarching story that the rest of them do.
It's a level of preservation ABOVE the level of preservation you seem to believe in, marke. It allows for small, minor errors, because God knew that fallible humans would need to transcribe, make copies of, and spread His word, so in order to prevent the Bible from simply becoming a game of Chinese Whispers, He wrote a book with a story, rather than just a collection of plattitudes and nuggets of wisdom (though the story does contain those as well, but in story form).
I do not understand those who claim to be speaking God's truth while not believing God has given them a flawless source of truth for them to promote.
Because the Bible doesn't need to be "flawless" in order for it to be God's word.
God isn't so stuck up that He would require His word to be perfectly transcribed and/or translated, since He knows that eventually, someone somewhere will make a mistake, but it will be corrected, or at least, accounted for, by the context of the rest of the Bible.
It's the very reason why the Bible is such a thick book! It's so that if we make an error, that error, just like the Book of DNA written within us humans, can be corrected.
It's an excellent example of "one witness shall not be enough to establish a matter; two or three witnesses are needed."