Exodus 3:13 in the King James Version
And Moses said unto God, Behold, when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them?
Context
12 He said, “Certainly I will be with you. This will be the token to you, that I have sent you: when you have brought the people out of Egypt, you shall serve God on this mountain.”
13 Moses said to God, “Behold, when I come to the children of Israel, and tell them, ‘The God of your fathers has sent me to you,’ and they ask me, ‘What is his name?’ what should I tell them?”
14 God said to Moses, “I AM WHO I AM,” and he said, “You shall tell the children of Israel this: ‘I AM has sent me to you.’”