Paul, and Silvanus, and Timotheus, unto the church of the Thessalonians which is in God the Father and in the Lord Jesus Christ: Grace be unto you, and peace, from God our Father, and the Lord Jesus Christ. Paul, and: Silvanus, and Timotheus - Though St. Paul himself dictated this letter, yet he joins the names of Silas and Timothy, because they had been with him at Thessalonica, and were well known there. See Acts 17:4, Acts 17:14.
And Silvanus - This was certainly the same as Silas, who was St. Paul's companion in all his journeys through Asia Minor and Greece; see Acts 15:22; Acts 16:19; Acts 17:4, Acts 17:10. Him and Timothy, the apostle took with him into Macedonia, and they continued at Berea when the apostle went from thence to Athens; from this place St. Paul sent for them to come to him speedily, and, though it is not said that they came while he was at Athens, yet it is most probable that they did; after which, having sent them to Thessalonica, he proceeded to Corinth, where they afterwards rejoined him, and from whence he wrote this epistle. See the preface.