Does use of the phrase “Grace be with you all” in Hebrews 13:25 argue that Paul wrote Hebrews? Not strongly! This phrase sounds Pauline but it is also of such a nature that any of his close associates could have picked the phrase up from him. This would include Barnabas, Silas, Timothy, Luke or any of his other associates such as Apollos, Priscilla, Epaphras, or Clement. This does not seem particularly persuasive or eliminate any candidate.