My God died.

[thejeff]

Not having priests or temples is not necessarily fatal. You can always appoint a prophet. You may have to wait, but that shouldn't end the game.

You could also get a military or victory point victory even with the god dead.

No dominion is, of course, fatal, whether the god is alive or not.

[FAJ]

This is either a bug or a fabrication. The death of your god means little else except the loss of a powerful unit and the temple checks he provides. This isn't Total Annihilation. The death of your god has little to no effect on the strength of the dominion in 37 provinces over one turn.