NT-Part 22 - Hebrews

Through its quotations from the Old Testament, interpretation of past events, and reflection upon saints of old such as Moses or Melchizedek, Hebrews presents rich teaching on the story of salvation that has culminated in Jesus Christ.
Because of such incredible scholarship of the Old Testament "believers" and their faith, I am inclined to believe it was written by the Apostle Paul; but it could have been his fellow student, Barnabas or even Apollo from Alexandria.