There is no mention of YHWH in the NT because the Jews had long refrained from uttering the divine name and over time, its pronunciation was lost, replaced by titles such as "Lord" or "God". Nowhere was there ever a prohibition on saying God's name out loud. It appears "taking the Lord's name in vain" was skirted by not using it at all.
As Paul said, "there are many gods and many lords" so unless you identify YHWH as the true God (as Jesus did in John 17:3) he will be just another god among the gods to people of the nations.
Israel's God had a name and they used it freely and reverently. It was inseparable from his people. We can see this this in the Psalms alone where the tetragrammaton is found 780 times. To remove the divine name and replace it with a title is a lot of substitution!
Well, there are actually three gods in Christendom, but they cram them all into one head somehow. This is not at all surprising because the origin of much of Christendom's teaching is ancient Babylon. The Babylonian pantheon came to have a number of triads of gods. One such triad was composed of Anu (the god of the sky), Enlil (the god of the earth, air, and storm), and Ea (the god presiding over the waters). Another triad was that of the moon-god Sin, the sun-god Shamash, and the fertility goddess Ishtar, the lover or consort of Tammuz. The Babylonians even had triads of devils, such as the triad of Labartu, Labasu, and Akhkhazu. The worship of heavenly bodies became prominent (Isa 47:13), and various planets came to be associated with certain deities. The planet Jupiter was identified with the chief god of Babylon, Marduk; Venus with Ishtar, a goddess of love and fertility; Saturn with Ninurta, a god of war and hunting and patron of agriculture; Mercury with Nebo, a god of wisdom and agriculture; Mars with Nergal, a god of war and pestilence and lord of the underworld.
We see with the change to the Gregorian calendar, no shift in the names of pagan deities in the months and days of the week. Babylonian false worship is alive ans well in Christendom.
On the contrary, in Ex 3:13-15 in the Complete Jewish Bible says:
"Moshe said to God, “Look, when I appear before the people of Isra’el and say to them, ‘The God of your ancestors has sent me to you’; and they ask me, ‘What is his name?’ what am I to tell them?” 14 God said to Moshe, “Ehyeh Asher Ehyeh [I am/will be what I am/will be],” and added, “Here is what to say to the people of Isra’el: ‘Ehyeh [I Am or I Will Be] has sent me to you.’” 15 God said further to Moshe, “Say this to the people of Isra’el: ‘Yud-Heh-Vav-Heh [Adonai], the God of your fathers, the God of Avraham, the God of Yitz’chak and the God of Ya‘akov, has sent me to you.’ This is my name forever; this is how I am to be remembered generation after generation."
The personal name of YHWH (
Yud-Heh-Vav-Heh) can be rendered "I Will Be What I Will Be", which is not simply a statement of his existence but of his actions in preserving his will.
YHWH is the causative form, the imperfect state, of the Heb. verb ha·wahʹ (become); indicating that God can "become" whatever is necessary to accomplish his purpose.
Yah or Jah is the shortened form of the divine name and is incorporated into such words as "hallelujah"...which means "praise Jah" or Jehovah..
Unless you know the God who bears that name, you will not be saved. As Jesus said (John 17:3) we have to "know" Jehovah as the "only true God" and also "know" his son. I don't believe that Christendom knows them at all.
If there were no false gods from whom to distinguish himself and his people, that might be true. But humans did not give God his name...he revealed it to them. They used it freely and reverently throughout the Bible.
Indeed Abraham knew God's name long before Moses was told to declare it to his people in Egypt. Remember that they had been in Egypt for 175 years and enslaved for a good while before God delivered them. God's prophets also spoke in Jehovah's name, keeping it before the people constantly. Jeremiah mentions Jehovah 729 times in his pronouncements; Isaiah 480 times; Ezekiel 441 times.
We acknowledge that there is no "J" in the Hebrew alphabet. But translation is a serious business so we want to make sure that nothing is lost as to meaning or intent when we translate from one language to another. If translation was a purely human endeavor, that would be a worry, but I believe that God has been guiding the writing and preservation his word from the beginning. It is still here today intact, virtually as it was written, preserving the vital message it conveys about God and his purpose for the earth and for the people who inhabit it, and despite numerous attempts to destroy it. Its message is still as relevant today as the day it was written.
Changing names is not unusual in the Bible. Abram was changed to Abraham and Sarai to Sarah. Jocob had his name changed to Israel. As you said, "Jesus" is not his name in Hebrew, yet few quibble about its English translation. Think of all the other "J" names in the Bible...Jeremiah, Jehosaphat, Jeoahaz, Jehoram, Joshua, Jehu, Joel....none of which are Hebrew names. Most are derivatives from the divine name and incorporate it into the meaning.