Far off into infinity, across the great emptiness, darkness roiled and swelled. He had cast it out, so many eons ago, and so had been able to tame the universe and populate it with beings of his own creation. Now the dark had returned, threatening his universe with the devastation of pure chaos. Fortunately, God had seen the darkness coming when it was still thousands of millennia out and engineered a species designed to combat and nullify the dark. He'd stayed with them as long as he could, then, forced to confront the darkness directly, left his people to develop on their own, sending messengers with knowledge and technology just before he left.
It had been a couple thousand years since he'd activated the Savior protocol. Through a half-mortal proxy, new technology and abilities should have been granted to his little super-hominids beyond the simple tools and philosophies his first messengers had given. Over a few centuries, his proxy should have expanded their minds to hold the knowledge they'd need to make war on the dark, teaching them the illuminated language of God. Further instructions passed on during the Prophet cycle should have allowed them even greater understanding of the vast powers granted by the Savior protocol. He'd been broadcasting specific instructions relating to the coming war against the dark via sensitives over the centuries, and if his people had followed them, they would be prepared for the worst.
Then the last of God's barriers broke and the darkness invaded the universe in a great rushing wave. God raced ahead, outpacing the darkness by mere decades, arriving on Earth with less than a century until the darkness overwhelmed them. He stood mighty in the sky, his countenance spanning the horizon. In his own language, spoken first by the stars when they were young, God rallied his people to him.
After a pause just long enough to be unsettling, humanity looked up at God and said, "Huh?"