God's name existed before human languages existed.
"If I speak in the tongues of men and of angels but do not have love, I have become a clanging gong or a clashing cymbal. And if I have the gift of prophecy and understand all the sacred secrets and all knowledge, and if I have all the faith so as to move mountains, but do not have love, I am nothing." (1 Corinthians 13:1,2)
The Bible speaks of "the tongues of angels," meaning heavenly communication.
No human can pronounce God's name here on earth the same way it is pronounced in heaven, but God is reasonable. He doesn't expect humans to pronounce things the way angels would.
God doesn't expect Greeks to pronounce His name the same way Hebrews would, just like God doesn't expect English speakers to pronounce His name the same way Greeks would.
Jehovah is the One who divided up the languages in the first place after the Babel incident. He knows what His name is, and He knows when someone is calling on Him. He's not partial.
The meaning of His name is what is more important: "He Causes To Become."
But as regards the name Jehovah in English, some people complain about "some monk named Martini made up the name in the 1270s so it's not valid..." and yet those same people fail to acknowledge that English in its present form was not even a thing until between the early 14th to the 17th centuries.
https://www.quora.com/Who-is-credited-with-first-using-the-name-Jehovah-as-a-proper-name-for-God/answer/EasyAddendum?ch=10&oid=1477743814152363&share=9e7d5b97&srid=hy1dvD&target_type=answer
Mythbusters Regarding God's Name Jehovah
The word Jehovah, used mostly in association with JWs has become besmeared, leaving a bad taste in my mouth so to speak, what with their CSA and stealing KHs and shady business practices. I have also seen videos about esoteric cults using the name in reference to the devil rather than almighty God.
That was the goal of the Devil, to blaspheme Jehovah's name so that people wouldn't use it.
Genesis 4:26 records that people have been calling on Jehovah's name in a blasphemous way for a long time: "At that time people began calling on the name of Jehovah." When those esoteric groups mix Jehovah's name in with their false worship it is for the purpose of poisoning their relationships with Jehovah. The individuals mixed up in those esoteric practices are abusing themselves or abusing others or subjecting themselves to abuse while at the same time using God's name, so they eventually grow to associate Jehovah's name with bad things even though He is not the source of any of the bad things they are doing.
It's the same idea with the Watchtower. The Watchtower teaches lies about Jehovah. The disfellowshipping doctrine is a lie. The 1914 things is a lie. There are a lot of things that Watchtower teaches that are lies all the while they claim to represent Jehovah.
Here's the thing: they don't represent Jehovah. They are liars. Liars gonna lie. Their lies don't negate that God's name in English is Jehovah.
You can call him Yahweh if you want; you can call Him Jehovah if you want. He knows you're talking about Him. What matters is calling on Him in faith - in other words, recognizing the meaning of His name, and that He will respond.
I was chatting with someone the other day on another forum about a similar topic. That person was trying to say that Jesus didn't use God's name Jehovah or that it shouldn't be in the New Testament because it wasn't pronounced in Greek, but it was pronounced in Greek.
The Catholic Church has hidden their copies of many manuscripts that have God's name in Greek. (I'm not talking about just the Hebrew letters of the Tetragrammaton. I'm talking about His name translated into Greek.)
The texts typically used for many English translations today are either the Codex Vaticanus or the Codex Sinaiticus, or the Textus Receptus. The same types of apostates who wove in the hellfire doctrine or the Trinity doctrine are the ones controlling access to those older manuscripts. Those apostates are not to be trusted.
The modern orthodox Judaism tradition also is not to be trusted with giving an accurate account of the history of the use of God's name. The Kabbalistic teachings have been the very doctrines that blaspheme Jehovah's name the most.
There are fragments of transcripts in Greek dating to just prior to the time Jesus was born that have the name Jehovah in Greek. It's not the Hebrew Tetragrammaton; it's a Greek version of God's name. Jesus would have had access to Greek manuscripts with God's name in them. When Jesus taught, he would have used God's name in both Hebrew and in Greek. Thus he showed us by his example that it's okay to use God's name in another language.