Complex sentence: The stolen body hypothesis posits that the body of Jesus Christ was stolen from his burial place and that his tomb was found empty not because he was resurrected, but because the body had been hidden somewhere else by the apostles or unknown persons.
Split into simpler sentences: The stolen body hypothesis posits that the body of Jesus Christ was stolen from his burial place. His tomb was found empty not because he was resurrected, but because the body had been hidden somewhere else by the apostles or unknown persons.