2 Thessalonians 3:17-18
17 The salutation of Paul with mine own hand, which is the token in every epistle: so I write.
18 The grace of our Lord Jesus Christ be with you all. Amen. [The second epistle to the Thessalonians was written from Athens.]
17 It is evident that the apostle did not pen his own epistles. To avoid forgery, however, he wrote the greeting himself and, in this case, signed his own name (2Th_2:2).