Jehovah was never a accurate translation of the Divine Name.
The spelling of "Iehovah" entered the English language through William Tyndale’s translation of the Bible completed in 1537. He transliterated the tetragrammaton into the English language with the Masoretic vowel markings as had those in the Renaissance. The letter and sound of the English "J" was a later development of the English language, and so this spelling and pronunciation would not change to "Jehovah" until the late 17 th century. Since this time many English speakers have pronounced God’s name as Jehovah.
So how exactly should we pronounce the Hebrew YHWH? Because of the fact that the vocalic tradition for the pronunciation of YHWH has not been preserved, we cannot be absolutely sure about its pronunciation. We can be fairly certain, however. Here is a brief examination of the divine name of God.
YHWH is the third person singular form, most likely coming from the Hebrew word hayah, which has the meaning of "to be." In Exodus 3:14, when Moses asked God for His name, God said His name was ehyeh. This is the first person form of hayah, meaning "I am." YHWH is the third person form meaning "He is."
The original pronunciation was probably YaHWeH. This seems to be the case by examining Jewish names. Many names contain part of the divine name, i.e. yah, and by examing the vowels that they used to construct their names with the divine abbreviation attached, we can get a feel for how YWHW was originally pronounced. We conclude from the examining names such as Joshua, Jehoshaphat, Elijah, and even the word hallelujah (hallel=praise; yah=Yahweh), that YH was pronounced as yah. We also have evidence that Yahweh is probably the correct pronunciation from examining the Greek’s tranliteration of the divine name as iaoueor iabe.
In conclusion, although it is not necessarily wrong to say God’s name as Jehovah, by no means can it be claimed that Jehovah is the name of God that has only been restored to us in these recent times. At best Jehovah can only be claimed to be an acceptable way of pronouncing God’s name in the English language, and at worst it could be said to be a phonetic corruption of God’s name. The probable pronunciation of God’s revealed name is Yahweh.
So, why even bother claiming Jehovah being the Divine Name? Why even use it?