No, basically the idea is that from 1-25 you get these bonuses, then at 50 you become a lesser godling, gaining access to a single domain and the ability to grant spells up to 4th level spells, then at 100 you get a second domain and fully grant spells.

The step from greater godling to full fledged deity is still up in the air, probably has more to do with number of worshipers than Power.