Exodus 3:13-15

13And Moses said to 1God, Behold, [when] I come unto the children of Israel, and shall say unto them, The 2God of your fathers hath sent me unto you; and they shall say, What is his name? what shall I say unto them?

14And 3God said to 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.

15And 4God said moreover to Moses, Thus shalt thou say unto the children of Israel: Jehovah, the 5God of your fathers, the 6God of Abraham, the 7God of Isaac, and the 8God of Jacob, hath sent me unto you. This is my name for ever, and this is my memorial unto all generations.