But you, brothers, don’t be weary in doing what is right. If any man doesn’t obey our word in this letter, note that man and have no company with him, to the end that he may be ashamed. Don’t count him as an enemy, but admonish him as a brother. Now may the Lord of peace himself give you peace at all times in all ways. The Lord be with you all. I, Paul, write this greeting with my own hand, which is the sign in every letter. This is how I write. The grace of our Lord Jesus Christ be with you all. Amen.
Stated in text
The letter names Paul as author; some scholars dispute this.