For these lost people, the most important thing for them was the chance to serve their god, which has now become the greatest height they could ever hope to reach. How many mortals in the many years of their planet's existence could claim such honor?
Parents instructed their children long into the night to be mindful and sturdy, for the chance to be selected by god. What was valued by the god was wisdom and alacrity of thoughts. For people who had become used to performing only mind-numbing work, the chance to finally use their minds was a welcome development.
They were informed that they were the seeds of their entire people, taken by their god to become the first of many. For that honor, they were willing to sacrifice, and they would make sure their descendants followed that oath until the end of time.