plmkrzy,
Earlier in this Thread, I believe you had asked how to pronounce YHWH.
That is a very good question.
However, since no one knows which vowels were used in YHWH, no one knows exactly how it should be pronounced.
A lot of people think Yahweh (Pronounced either Yah-Way or Yah-Wee) is most accurate.
Other people think Yehovah or Yehowah or Yahowah is most accurate.
The name "Jehovah" came from JHVH (a different way of spelling YHWH), and adding the vowels from the Hebrew word for "Lord" (Adonay).