Wort reading. Nice and valuable explanation about Dokseong.
3 Gods here mean Buddha, Dokseong, Sansin.
It is uncertain what Dokseong means really. We can estimate what Dokseong is. In literally, Dokseong means a sacred who enlighted for himself without other help. Some scholars though Dokseong as a founding god of Korean history. Who really was a Shaman. In eastern ancient history, the function of religion and politics was not divided.