The author of the book of Hebrews is not definitively known, as the text does not contain a specific attribution to any individual. However, many evangelical Christian scholars believe that the book was likely written by the apostle Paul.

Paul is considered a highly influential figure in the early Christian church and is traditionally credited with writing many of the epistles found in the New Testament. His writings are known for their theological depth and practical advice for Christian living.

The book of Hebrews is particularly focused on showing the superiority of Jesus Christ and the New Covenant over the Old Covenant and the Mosaic Law. It emphasizes the importance of faith and perseverance in the Christian life and encourages believers to hold fast to their confession of Christ.

Overall, the author of Hebrews, whoever it may be, is seen as an inspired writer who played a significant role in shaping early Christian theology and encouraging believers to remain steadfast in their faith.