When you ask for someone’s identity, you normally get a name. Names distinguish individuals from other people. Jane differs from Sarah and from Jennifer, who are all women, similar in many ways yet distinct. But God has no similar others; thus God has no name.
God describes Himself to Moses not by a name but by a declaration of essential character. The verbs in this quotation are common imperfect tenses of the verb “to be,” suggesting continuing unfinished action. God is neither past tense “was,” future tense “will be,” nor static present tense “is.” God is ongoing present active: the Is-ing One. What better description of the eternal, living God than this! God is the One who is , always and forever, living and active, not Is-ness (a state of being) but Is-ing (living Being).
And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
Note: Verse coming from the KING JAMES HOLY BIBLE