He descends from the altar, sponsor nearby. The old king is dead, long live the new king, chosen by the church and ordained by the god's angel itself. His predecessor, having been smote from leadership as an unworthy of bearer of the god's blessing to rule, left a gaping hole in the power structure that only the divine coronation could fill.

Explore this and more in this episode of the Lore Foundry. 

lorefoundry.com

https://en.wikipedia.org/wiki/Divine_right_of_kings