Vowels are not used in the "written" Hebrew however they are in the spoken language but unfortunately there is no pronunciation for "J" in the spoken language of Hebrew. As to how the name of God in the Scriptures "YHWH" was spoken orally is a bit of a mystery.
However the JW's must have received some "divine revelation" of the truth somewhere along the way with the countless other false prophets and teachers that have been peddling their so called "truth".
-----------Oilburner, don't you find it strange that the name Jesus meaning 'Jehovah is Salvation' is readily accepted by those objecting to the letter "J" being used in God's name? And then there are the words Jews, Jerusalem , Joshua ... need I go on? How were these pronounced? Should we not use them if we don't know?
(Matthew 23:24) Blind guides, who strain out the gnat but gulp down the camel!
