Complex sentence: Oswald specifically wanted to reform the Statuta Nova of 1368, which stated that no one could emend copies of the Old and New Testament, unless they were doing so against exemplars that had been prescribed by their order.
Split into simpler sentences: Oswald specifically wanted to reform the Statuta Nova of 1368. It stated no one could emend copies of the Old and New Testament, unless they were doing so against exemplars that had been prescribed by their order.