The authorship of the Book of Hebrews in the Bible is unknown and has been a subject of debate for centuries. Traditionally, it was attributed to Paul the Apostle, but modern scholarship mostly rejects Pauline authorship due to differences in style and language. Other proposed authors include Apollos, Priscilla and Aquila, Barnabas, Clement of Rome, Luke, and Silas. Early church fathers like Origen acknowledged the uncertainty, suggesting that the thoughts may be Paul's but the actual writing was done by someone else who knew his teachings. Apollos, an eloquent Alexandrian and a well-versed Jewish Christian, is one of the leading candidates. Ultimately, the true author remains unknown, and the letter itself does not name the writer.