“ God replied to Moses, “I AM WHO I AM.”

Meanwhile, Moses was shepherding the flock of his father-in-law Jethro, the priest of Midian. He led the flock to the far side of the wilderness and came to Horeb, the mountain of God. Then the Angel of the Lord appeared to him in a flame of fire within a bush. As Moses looked, he saw that the bush was on fire but was not consumed. So Moses thought: I must go over and look at this remarkable sight. Why isn’t the bush burning up? When the Lord saw that he had gone over to look, God called out to him from the bush, “Moses, Moses!” “Here I am,” he answered. “Do not come closer,” He said. “Remove the sandals from your feet, for the place where you are standing is holy ground.” Then He continued, “I am the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob.” Moses hid his face because he was afraid to look at God. Then Moses asked God, “If I go to the Israelites and say to them: The God of your fathers has sent me to you, and they ask me, ‘What is His name?’ what should I tell them?” God replied to Moses, “I AM WHO I AM. This is what you are to say to the Israelites: I AM has sent me to you.” God also said to Moses, “Say this to the Israelites: Yahweh, the God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you. This is My name forever; this is how I am to be remembered in every generation.
Exodus 3:1-6,13-15 - hHCSB