YHWH

The name of God seems to have gone through a lot since he revealed it to Moses in the book of Exodus. The name of God is transliterated into English as YHWH, and is pronounced as Yahweh. The Hebrews lost the tradition of saying the name openly, and it came to the point that it was pretty much lost. In the Masoretic text of the Bible, the name YHWH is given different vowels so that people will not say it correctly. Martin Luther did not know of this intentional change and so he translated it as Jehovah, and that is why we now have that name.
An interesting article I found was "The Errancy of the Masoretic Text and the KJV." It is a very interesting article about the Masoretic text and also brings in the Septuagint. For more of this article, click here. Comment and say what you think of any of these issues.