Paul, Silvanus, and Timothy, to the assembly of the Thessalonians in God the Father and the Lord Jesus Christ: Grace to you and peace from God our Father and the Lord Jesus Christ.
First, there is Paul's characteristic salutation and greeting  (1 Thessalonians 1:1), followed by his fervent expression of thanks and appreciation for the Thessalonian church  (1 Thessalonians 1:2-10).