Must humans crave power. They want to satisfy their selfish ego and appetite but God Himself is Power.
God is selfless and only uses power to help man so He can never abuse power, however most men can only abuse power.
God does not need to prove Himself to anyone that is why He is the only one that can never misuse power.
It is because power is not foreign to Him and is His nature. Power belongs to God and looks good on Him because He wears it comfortably.