2762: Keys of the Kingdom

The unclued lights are a small fraction of almost 800. Across 12   Oilmen rail about petroleum product (7,3) 13   Came across religious instruction chapter consisting of verses (6) 14   Bleat including angry tirade for this plant? (7) 15   Tea urns of Salvation Army medic, very apt resources, say, for starters (8)

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