There are several places in the first four chapters in the Bible that have two versions of the same story, each slightly different. The creation stories are one of those with the first story at Gen 1:1 and the second at Gen 2:4.
The theory is that at one point the tribes of Israel were split politically into two sides. And that both sides gradually developed different versions of parts of the early Bible.
The undeniable truth that the Bible has been altered over time is found in the Dead Sea Scrolls, where ancient versions of current books of the Bible were found that were significantly different than versions of 1000 years later. And, there were multiple copies of some of these, some of them different from each other.
Just as family members in this country 200 years ago didn't all spell their last names the same (example: Neighbors, Nabors, and Neighber might be used by brothers) early versions of the Bible that were hand transcribed may have accumulated errors.
I know this won't sit well with litteralists. But the earliest litteral copies of some of the books of the Bible do not match what you can purchase at the Christian book store.
To those litteralists out there, which Hebrew version was "correct"?
Pretend this is "Hannity and Colmbes" and just answer the question, don't avoid it like Barbara Boxer would.
Not to mention that some passages in the KJV got into it via "notes in the margins" of earlier texts.