Divine rule from those people restricting what is wicked? (8)

I believe the answer is:

thearchy

I'm a little stuck... Click here to teach me more about this clue!

'divine rule' is the definition.
'thearchy' can be an answer for 'rule' (I've seen this before). I am not certain of the 'divine' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for thearchy that I've seen before include "religious form of ruling" , "Ecclesiastical governors" , "rulership" , "Rule by god(s)" .)

I've seen this clue in The Telegraph.

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