Exodus 3:14-15

God said to Moses: I AM WHO AM. He said: Thus shalt thou say to the children of Israel: HE WHO IS hath sent me to you. And God said again to Moses: Thus shalt thou say to the children of Israel: The Lord God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath sent me to you. This is my name for ever, and this is my memorial unto all generations.