The inspired writer, used by the Holy Spirit to record this epistle, was the Apostle Paul...In writing this Epistle to the Hebrews he was divinely guided to omit the reference to the human authorship...
Evidences of the Pauline authorship
The person addressed
The two-fold purpose of the epistle
The theme of the epistle
The chief point of the epistle - Christ, out great high priest
Talbot, Louis T., "Studies in the Epistle to the Hebrews - Lesson 1" (1945). Talbot Publications. 114.