Rule in accordance with the religious principles or by priesthood is described as​

Priesthood, the office of a priest, a ritual expert learned in a special knowledge of the technique of worship and accepted as a religious and spiritual leader.

A theocracy is a type of government where one or more priests rule in the name of a deity. A god or goddess is recognized as the supreme ruler, and the laws based on religious law. Democracies are considered to be the opposite of theocracies.

Explanation:

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.