If I could afford it, I would put a copy of the Book of Hebrews in the hand of every unbelieving Jew. The entire Book of Hebrews is a wonderful gospel tract to the unbelieving Jew. It answers every question that the Jew might have and reveals the true history of the Jew in the process. This is why there should be no surprise to the fact that the author to the Book of Hebrews is not revealed in the book itself. This author believes that the human author to the Book of Hebrews is Paul, the Apostle.