Through either training with the gods or somehow learning to break the barriers of the limits of mortals, you have obtained God Ki.
Compared to regular Ki, God Ki is much denser and much easier to control. You also gain an immense boost in power compared to your full power when using your regular Ki.
While you usd God Ki, no one who does not possess God Ki or reached the level of the Gods in power, can sense your energy.
You also become immune to the effects of dark magic, but you can mimic the effects should you have the necessary knowledge.