Got to this late- a bit trickier than last week's, I thought. Don't see any reference to it here, so I must be in the minority. Finished but with three questions.
12a: Strangeness in e.g. Congo making one bewildered (5, 2 words) I have AT SEA but don't see the wordplay.
31a: Opera the French love on being denied heaven! (6) RIENZI, ditto.
33a: Church about right, one responsible for leader showing faith (5) CREED, ditto.