Exodus 13-15
And Moses said to God, "Look, when I come to the Israelites and say to them, 'The God of your fathers has sent me to you,' and they say to me, 'What is his name?', what shall I say to them?" And God said to Moses, “Ehyeh-Asher-Ehyeh, I-Will-Be-Who-I-Will-Be.” And thus you shall say to the Israelites, ‘Ehyeh has sent me to you’.”And God said further to Moses, “thus you shall say to the Israelites: ‘The Lord of your fathers, the god of Abraham, the God of Isaac, and the God of Jacob, sent me to you. That is my name forever and thus I am invoked in all ages…