Book of Shemot (Exodus): Chapter 3
15 And G-d said moreover unto Moses: 'Thus shalt thou say unto the children of Israel: HaShem, the G-d of your fathers, the G-d of Abraham, the G-d of Isaac, and the G-d of Jacob, hath sent me unto you; this is My NAME for ever, and this is My memorial unto all generations.
Book of Shemot (Exodus): Chapter 6
2 And G-d spoke unto Moses, and said unto him: 'I am HaShem;
3 and I (HaShem) appeared unto Abraham, unto Isaac, and unto Jacob, as G-d Almighty, but by My name hwhy I made Me not known to them. (NOW, NOW, WHERE IS HaShem?) [Comments: This divine name is traditionally not pronounced by the Jews; instead the Lord, it is regularly substituted by Adonai (that is another nickname of their G-d).
No. To say that Adonai, which means lord, someone having authority, is a nickname for their G-d [sic]. that is, God, or god, is like saying that sir is a nickname for a person you address as such. Saying G-d seems pretentious to me. The English word God comes from the Proto-German *ǥuđán from the Proto-Indo-European *ǵʰutóm which is derived from a root word meaning to pour, libate or to invoke.
Words translated as god are associated with the use of pagan worship because that is how the words were used prior to Christianity; festivals, temples, pagan gods, sacrifice, libation, pouring, invocation, prayer and sky are meanings associated with worship. God is just a word, not a name. In the Classical Latin the polytheistic Romans didn't use the regularly constructed singular form of deus (*dee) because they addressed their gods individually by name. It was only in the Late Latin after Rome's conversion to monotheistic Christianity where God was used as a name, though it was never meant to be used in that way.
The ancient Greek word for god is theos, from the Proto-Hellenic reconstruction of *tʰehós; Theos can be a god, God, a ruler, and when in the feminine, a goddess. It's a thematicization of the Proto-Indo-European *dʰéh₁s which comes from a root meaning "to do, or put, to place" A thematicization is where a thematic vowel is inserted on the root or stem of the word to make it undergo a productive vocalic inflection.
A cognate is a word having the same linguistic derivation as another, from the same original word or root. For example, the English is, German ist, Latin est are from the Indo-European esti. Theos is a cognate with the Phrygian δεως (deōs, "to the gods"), Old Armenian դիք (dikʿ, "pagan gods") and Latin fēriae ("festival days"), fānum ("temple") and fēstus ("festive"). Though the Latin deus appears similar it is actually a cognate of Zeus, meaning "sky, heaven, sky god," which was applied to Zeus specifically, to other gods, and to emperors of Rome.
You see? Religious devotion. It's becomes sort of like idolatry. Making more of a thing than the thing is. God, G-d, Yahweh, Jehovah. It becomes an ideological fixation like political parties, sports team, fashion, music, art, wine. Anything. Becomes a god unto itself. So, Jesus disputed with Satan regarding the body of Moses. The angels took Jesus's body away. So, a rabbit's foot, a cross, a swastika, a word, a name becomes something other than it is when religious devotion is applied.
G-d is incomprehensible only when God is wrapped up in tradition. Which is why the scribes removed God's name. Academically this discussion would be primarily linguistic if it weren't for tradition as a result of religious devotion rather than practical application. I'll demonstrate this in action below in response to your later comments.
As they never knew the true GOD, GOD Almighty and Creator of the heavens and of the earth, for the father of them never abode in the truth-John 8:v.44-, so the Jews created one specifically for them, and strangely suggest several FICTITIOUS NAMES for this pseudo-god they created in the same fancy style of old idolatry since the age of Moses, when they invented several gods to worship; The current fictitious names of the current false god created by the Jews are: Jehovah, Yahweh, HaShem, Adonai, Yehovah, Elohim, all FICTITIOUS names of a pseudo-god named by esoteric, kabbalistic and spiritist Jews more to invoke him than to worship him, as is common in the cult among spiritists in the invocation of the dead in the their cults full of mysticism, and where the spirit of the dead speaks with the same voice of the defunct that was invoked.
Terrible, very terrible, for behind this Jewish misticism is hidden the person of the former cherub, known by multitudes as Lucifer, whom really is hidden under or behind the figure of a satanic TETRAGRAMMATON YHWH in the book of Torah, and is preached by the esoteric and kabbalistic, and spiritists followers of the old Serpent-John 8:v..44- , mainly followers of the Judaism.
Those aren't fictitious names. Some of them aren't even names. Adonai is lord, as mentioned above, meaning having authority. Landlord, Lord Wellington. Elohim is just a variation of the Hebrew El, God, meaning strength. The ancient Hebrew word El and its variations are translated as god, gods or goddesses. They are applied to men, such as Moses (Exodus 4:16 Hebrew lelohim, Greek theon, Latin Deum; Exodus 7:1 Hebrew elohim, Greek theon, Latin Deum), the Judges of Israel (Psalm 82:1, 6 Hebrew elohim, Greek theoi, Latin dii) and Jesus, prophetically at Isaiah 9:6 (Hebrew El Gibbohr, Latin Deus fortis). At John 10:34-35 Jesus himself quoted Psalm 82:1, 6 confirming the prophetic and practical application of gods as men, including himself.
The Hebrew word elohim is also used in the plural form. Sometimes this means multiple gods (Exodus 12:12; 20:23) but sometimes it is used as a plural of excellence in application to single gods and goddess. For example, Ashtoreth (1 Kings 11:5), Dagon (1 Samuel 5:7). and Marduk (Daniel 1:2)
When elohim is used with the definite article ha it refers to Jehovah exclusively. (Genesis 5:22) Similarly, the Hebrew word satan, meaning adversary; resistor; opposer, can apply to anyone acting as an adversary or resistor, but when used with the definite article ha, as in ha satan, it refers to the chief adversary of God, Satan the devil. (Job 1:6; Zechariah 3:1-2) Devil means slanderer; liar. At Numbers 22:22, 32 the Hebrew word satan is used describing an angel of Jehovah resisting, or acting as an adversary to Balaam. There are many examples of others being referred to as satan. (1 Samuel 29:4; 2 Sa 19:21, 22; 1 Kings 5:4; 11:14, 23, 25) In a similar way the contraction of the Arabic al-Ilāh is "the God" from which comes Allāh.
Jesus spoke of himself as "the bright morning star" and promised his followers that he would give them "the morning star." (Revelation 22:16; 2:26, 28)
The morning star or daystar represents the dawn of a new day. At certain seasons the brightest of the stars in the eastern horizon announced the coming of the dawn, and so the morning or daystar was a figurative representation of something new.
Some confusion regarding this was caused by the use of the Latin word Lucifer at Isaiah 14:4, 12-13. Jerome's Latin Vulgate translated the Hebrew word Heylel which means "shine; shining one" into the Latin Lucifer which means "light bearer; bringer of dawn." Since the King James Version is heavily influenced by the Latin Vulgate they used the term Lucifer which was thereafter often confused as a name which applies to Satan. Actually the term is being applied there to Nebuchadnezzar and the Babylonian dynasty, who thought to exalt their throne above the stars of God.
Nebuchadnezzar was the shining one, or bringer of a new dawn in the sense that he would destroy God's earthly representation on earth for their faithlessness. Babylon's conquest of Jerusalem put an end to the Judean kings and began the appointed times of the nations, a time when God would have no kingly representation until the coming of Jesus, a new King.
The term also appeared in the Greek (phosphoros) translated morning star or daystar at 2 Peter 1:19 in a similar way, representing the possibility of a new dawn in the heart of Christians paying attention to the inspired scripture.
Think lightning bug (firefly) or Bill Gates vaccine tattoo because they use Luciferase, a generic term for the class of oxidative enzymes that produce bioluminescence.