"I Am that I Am" is a common English translation of the Hebrew phrase אֶהְיֶה אֲשֶׁר אֶהְיֶה‎‎ – also "I am who am", "I will become what I choose to become", "I am what I am", "I will be what I will be", "I create what I create", or "I am the Existing One". Wikipedia