The development and usage of the word "Jehovah" came DIRECTLY from Catholicism:
A piece of Watchtower literature states some embarrassing information about the word Jehovah, and elaborates as to its totally Catholic origin from the year 1270:
"By combining the vowel signs of 'Adhonay and 'Elohim' with the four consonants of the Tetragrammaton the pronunciations Yewah' and Yehowih' were formed. The first of these provided the basis for the Latinized form "Jehovah." The first recorded use of this form dates from the thirteenth century by C.E. Raymundus Martini, a Spanish monk of the Dominican Order, used it in his book Pugeo Fidei of the year 1270. Hebrew scholars generally favor "Yahweh" as the most likely pronunciation." (Aid to Bible Understanding, Watchtower Bible And Tract Society, 1971, pp. 884, 885)
Why have the Jehovah's Witnesses adopted this inappropriate word as God's TRUE name?
Again, from their own literature:
"While inclining to view the pronunciation "Yahweh" as the more correct way, we have retained the form "Jehovah" because of people's familiarity with it since the 14th century. (The Kingdom Interlinear Translation of the Greek Scriptures, Watchtower Bible and Tract Society, 1969, pp. 18,19.)
The Witnesses by their very own literature have openly admitted that the word "Jehovah", which they have accepted and taught as God's TRUE name, is in fact a MAN MADE TRADITION developed and nurtured out of the bowels of Catholicism. By their very own words, they have chosen to accept this word as God's name because of people's familiarity of the TRADITION since the 14th century and NOT because it is the truth.
That is a HUGE mistake.
Jesus was ALWAYS condemnatory of individuals that taught the traditions of men as if they were of God's origin. That is a simple basic Bible truth, which is being ignored in whole by Jehovah's Witnesses.
The above is truth. Jehovah being God's name is a BLATANT LIE.
"Jehovah" was never God's name.
Get this; I believe "Jehovah" is going to hades.