Exodus 3:13 (RSV)   Then Moses said to God, "If I come to the people of Israel 
and say to them, 'The God of your fathers has sent me to you,' and they ask 
me, 'What is his name?' what shall I say to them?" 

Exodus 3:14 (RSV)   God said to Moses, "I AM WHO I AM." And he said, "Say this 
to the people of Israel, 'I AM has sent me to you.'"