"God" is a title...."God" is what
he is, but he has a name that he gave to Moses in Exodus 3:13-15.
His name tells us who
From the Tanakh....
"And Moses said to God, "Behold I come to the children of Israel, and I say to them, 'The God of your fathers has sent me to you,' and they say to me, 'What is His name?' what shall I say to them?" יגוַיֹּ֨אמֶר משֶׁ֜ה אֶל־הָֽאֱלֹהִ֗ים הִנֵּ֨ה אָֽנֹכִ֣י בָא֘ אֶל־בְּנֵ֣י יִשְׂרָאֵל֒ וְאָֽמַרְתִּ֣י לָהֶ֔ם אֱלֹהֵ֥י אֲבֽוֹתֵיכֶ֖ם שְׁלָחַ֣נִי אֲלֵיכֶ֑ם וְאָֽמְרוּ־לִ֣י מַה־שְּׁמ֔וֹ מָ֥ה אֹמַ֖ר אֲלֵהֶֽם:
14 God said to Moses, "Ehyeh asher ehyeh (I will be what I will be)," and He said, "So shall you say to the children of Israel, 'Ehyeh (I will be) has sent me to you.'" ידוַיֹּ֤אמֶר אֱלֹהִים֙ אֶל־משֶׁ֔ה אֶֽהְיֶ֖ה אֲשֶׁ֣ר אֶֽהְיֶ֑ה וַיֹּ֗אמֶר כֹּ֤ה תֹאמַר֙ לִבְנֵ֣י יִשְׂרָאֵ֔ל אֶֽהְיֶ֖ה שְׁלָחַ֥נִי אֲלֵיכֶֽם:
15 And God said further to Moses, "So shall you say to the children of Israel, 'The Lord God of your forefathers, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you.' This is My name forever, and this is how I should be mentioned in every generation. טווַיֹּ֩אמֶר֩ ע֨וֹד אֱלֹהִ֜ים אֶל־משֶׁ֗ה כֹּ֣ה תֹאמַר֘ אֶל־בְּנֵ֣י יִשְׂרָאֵל֒ יְהֹוָ֞ה אֱלֹהֵ֣י אֲבֹֽתֵיכֶ֗ם אֱלֹהֵ֨י אַבְרָהָ֜ם אֱלֹהֵ֥י יִצְחָ֛ק וֵֽאלֹהֵ֥י יַֽעֲקֹ֖ב שְׁלָחַ֣נִי אֲלֵיכֶ֑ם זֶה־שְּׁמִ֣י לְעֹלָ֔ם וְזֶ֥ה זִכְרִ֖י לְדֹ֥ר דֹּֽר:"
So you see "the Lord God's" name here is יְהֹוָ֞ה
.....YHWH.....Yahweh...or Jehovah in English.
His name means "I Will Be What I Will Be".....or God will be whatever he needs to be in order to fulfill his purpose or to accomplish his will.