The oldest name for the Jewish/Christian god is Yahweh. However, in ancient times it was forbidden to actually say his name; priests never said it. When they wrote it they used only the consonants, YHWH. Where they got the "a" and "e" that was later added to make it pronounceable I don't know. However, originally, when Moses asked Yahweh who he was, what he should tell the people, Yahweh (according to the King James Bible) said, "I am that I am," and did not give a name. I have never read so, but perhaps YHWH were from an ancient Hebrew way of saying "I am that I am." Don't know; just a thought of mine.
Well that's a tricky question because God is 3 people God the Father God the son ( Jesus ) God the Holy Spirit So his real name is God but he also has nick names, like LORD and Jesus also has nickname along with The Holy Spirit. but he isn't a human and really doesn't have a given name just I title from what I understand. Christianity is a hard religion to understand but it's very real and the true religion in my mind
Psalms 83:18 "until they learn that you alone,Jehovah, are the God above all gods in supreme charge of all the earth." (Living Bible) "Let them know that thou alone, whose name is The Lord, art the Most High over all the earth." (Revised Standard) This verse speaks about a name. In the original Hebrew in which much of the Bible was written, a unique personal name appears here. It is spelled (YHWH) in Hebrew letters. In English, the common rendering of that name is "Jehovah." Does that name occur in only one Bible verse? No, it appears in the original text of the Hebrew Scriptures nearly 7,000 times! A reason often given for omitting God' s name from the Bible involves a long-standing tradition of the Jews. Many of them hold that God's name should never be pronounced. This belief is evidently based on a misapplication of a Bible law that states; "You shall not use the name of Jehovah your God irreverently, nor use it to swear to a falsehood. You will not escape punishment if you do." (Living Bible) Revised standard,New international, And King James use "Lord instead of Jehovah". In replacing God's name with titles, Bible translators make a serious mistake.