Prototype Earth
Creating suitable mortals who could worship deities took a lot of experimentation. Ere and Elfemroth managed to create such mortals in a massive conduit containing an expansive universe. This conduit was the prototype of many duplicates, some just as large, some pared down to the size of a single solar system. Softlight was one of the nearly-identical enormous duplicates, and Abrecis was one of the smaller conduits.
Once the mortals of prototype earth were deemed suitable for the task of worshipping deities, the conduit was cut off from the multiverse as a means of preserving it in its known working state. Further experimentation was carried out on duplicates of prototype earth.