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.
"Grace" was a common Greek salutation that meant "greeting" or "rejoice." "Peace" is the Greek equivalent of the Hebrew "shalom" meaning "favor," "well-being," and "prosperity in the widest sense," especially prosperity in spiritual matters. Paul used both words when he greeted the recipients of his epistles. God’s grace is the basis for and leads to our peace.