Exodus 3:12-14 Douay-Rheims 1899 American Edition (DRA)
12 And he said to him: I will be with thee: and this thou shalt have for a sign, that I have sent thee: When thou shalt have brought my people out of Egypt, thou shalt offer sacrifice to God upon this mountain.
13 Moses said to God: Lo, I shall go to the children of Israel, and say to them: The God of your fathers hath sent me to you. If they should say to me: What is his name? what shall I say to them?
14 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.