The Book of Hebrews was written by an unknown author.
The fourteenth of the Epistles, and the nineteenth book in the New Testament, is entitled Hebrews. It was written in approximately 68 AD, but by whom, we do not know. Several possible authors have been credited with the work, but the style of writing is unlike any other books in the Bible, and so the author remains unknown.
The letter is addressed to Jewish Christians, many of whom found themselves persecuted by their fellow Jews. The writer of Hebrews fears that Jewish Christians are in danger of slipping back into the Jewish faith because of this persecution. To affirm them in their new found Christian faith, the author shows them Christ's superiority over all Old Testament laws and practices. He urges the Christians to remain true to the Gospel of Jesus Christ, their saviour.
Hebrews 13:10-12
"We have an altar, whereof they have no right to eat which serve the tabernacle. For the bodies of those beasts, whose blood is brought into the sanctuary by the high priest for sin, are burned without the camp. Wherefore Jesus also, that he might sanctify the people with his own blood, suffered without the gate"