This morning I posted at Out of the Ordinary on God’s most important name.
At the very least, “I am” means that God exists. We live in a physical world, surrounded by physical things, and it’s easy to live our lives as if what we can see and touch is all that exists. God is not physical; we can’t see or touch him, but his name “I Am” assures us that he there, as real—no, more real—than the stuff around us.