Did Paul write Hebrews?

Why Paul could not have written Hebrews (Pastor Gilbert Schellin, Faith Bible Church)
https://www.youtube.com/watch?v=BvYUJ_XIZAc

Help with Hebrews (Pastor Justin Johnson, Grace Ambassadors Church)
https://www.youtube.com/watch?v=q3sScncE7H4

Every one of Paul's 13 epistles (Romans-Philemon) begins with the word "Paul". That is his salutation in every epistle. The salutation of Paul with mine own hand, which is the token in every epistle: so I write. (2 Thes. 3:17) Obviously the book of Hebrews does not have Paul's name in it and was therefore not written by him.

Paul was the apostle of the Gentiles and worked in the apostleship of the uncircumcision (Rom. 11:13, 15:15-16, Gal. 2:1-9, Eph. 3:1-9, Col. 1:25-28, 2 Tim. 1:11, 1 Tim. 2:7), it would not make sense for him to have written the book in our Bible called "HEBREWS". 

The doctrines of Hebrews are not in line with God's dispensation to the Body of Christ as shown here:
http://av1611studyblog.blogspot.com/2015/09/hebrews-revelation-not-about.html
  

--Eli Caldwell