Exodus 3:11

8 And I have come down to take them out of the hands of the Egyptians, guiding them out of that land into a good land and wide, into a land flowing with milk and honey; into the place of the Canaanite and the Hittite and the Amorite and the Perizzite and the Hivite and the Jebusite.

9 For now, truly, the cry of the children of Israel has come to me, and I have seen the cruel behaviour of the Egyptians to them.

10 Come, then, and I will send you to Pharaoh, so that you may take my people, the children of Israel, out of Egypt.

11 And Moses said to God, Who am I to go to Pharaoh and take the children of Israel out of Egypt?

12 And he said, Truly I will be with you; and this will be the sign to you that I have sent you: when you have taken the children of Israel out of Egypt, you will give worship to God on this mountain.

13 And Moses said to God, When I come to the children of Israel and say to them, The God of your fathers has sent me to you: and they say to me, What is his name? what am I to say to them?

14 And God said to him, I AM WHAT I AM: and he said, Say to the children of Israel, I AM has sent me to you.