ANSWER: Most of the 1st and 2nd century churches, and also the early church fathers, received the epistle as written by the apostle Paul. Much internal evidence also offers proof that it is his writing, e.g., Hebrews 10:34, 13:23. As well, the structure and arrangement of the book is very similar to the other writings of Paul, especially his epistles to Rome and Galatia. By far, the greater weight of evidence and scholarship supports this reasoning.