1.We use a NAME to distinguish one entity from another to avoid confusion.
2.If there is only ONE of something it is one of a kind. Elivis is Elvis and those who pretend to be him are impersonators. Those who pretend to be Jesus are false or pseudo-christs. The Anti-Christ, for example , is just an early way of saying Elvis Impersonator :)
3.The idea of god (el) as opposed to gods(el-ohim) and such leads to regional proprietary deity naming. A Local Lord (Baal) needs to be distinguished from the neighboring enemy's Lord (Adonai) or you might piss him/her/it off.
4.Fear of pissing off a local deity by damaging the reputation of the deity leads to all sorts of superstious cautions. These superstious cautions are Rituals. Kind of like approaching a strange dog for the first time. Cautionary Ritual often becomes (eventually) formal religion.
5.Israel's deity was no exception. Do you risk defaming your all-powerful deity by misusing the spoken word? This is a special crime of BLASPHEMY and carries a harsh penalty. If you speak a NAME you represent a closeness, familiarity and relationship with the personage represented by that name.
We don't say, "Hi Barack; we say "Hello Mr.President." This is respect more than fear, but, the principle is the same. We do not PRESUME in the presence of a greater power.
6.Invoking the name of a Diety for calling down special favors is dangerous as well. When you bless or curse others with the power of your deity behind your words the risk is getting your ass kicked (which will reflect badly on the power of your deity and the reputation of that deity.)
7.Israel suffered defeats at the hands of its enemies although they represented a special relationship with a specific deity. (yhwh) Damage control required a strong reason be given which would NOT reflect badly on that deity. The popular excuse was that they themselves were BAD and were being punished (wink wink: our Deity is powerful, you see!) by the deity (yhwh)by being allowed to experience defeat at the hands of enemies.
8. The mythos of Israel became a pattern vis a vis the relationship of that POWERFUL deity (yhwh) and historical events (good or bad) in this way (Rewards vs Punishments).
9.When Babylonia swallowed up a vast portion of Israel it could have been a horrible refutation of yhwh's power and existence had the mythos not portrayed this event as a punishment.
10. Mingling with Babylonian religious ideas produced a new way of portraying setbacks, defeats and calamity under yhwh. The Ahura Mazda mythos of Evil as a being. The idea of an opposing personage (satan) appeared suddenly in Jewish religious doctrine.
11.Returning to their homeland (restoration from the Diaspora) caused and required a RE-telling of all their previous history with yhwh to include the new mythos-character satan.
12.The Tanach is a vast revision of everything that went before in terms of yhwh's power ethos clashing with evil satan.
13.Christianity continued and amplified the duality of good vs evil personifying it further. The death of Yeshua as a Messiah was merely a temporary blow by Satan AND----a fulfillment of yhwh's plan from way back in Eden (Genesis 3:15).
14.The greek pagan Neo-Platonic ideas, religion and philosophy of the Christian era caused the Messiah/Yeshua to further meld with the Jewish deity identity (yhwh) and a Triune understand became more comprehensible.
15.After the death of Yeshua, a retelling in epic proportions was required to make sense of his death to convert it into a powerful triumph over evil.
16.Yeshua was Jesus and Jesus was yhwh (Jehovah) and he would defeat Satan SOON (a return and battle for triumph).
From that point forward every Christian denomination has pushed and pulled those basics into their own brand of mythos.
For Jehovah's Witnesses, as merely one brand of that hybridization, a distortion of JEHOVAH above all else emerged and got twisted into a modern Second Advent triumph with a latter-day Israel (the anointed/governing body).
Voila! The whole tale told over again. JW's are Israel. Using the name Jehovah requires careful use, etc.
The name of Jehovah is a superstitious fetish. It is a way of creating a Brand name. Judge Rutherford was the inventor of this contemporary branding of a modern Second Adventist cult movement.
Accuracy has little to do with their policies and programs.