¹⁵ So then, brothers and sisters, stand firm^(A) and hold fast to the teachings^[a] we passed on to you,^(B) whether by word of mouth or by letter.

On Covering the Head in Worship

² I praise you^(A) for remembering me in everything^(B) and for holding to the traditions just as I passed them on to you.^(C)

Warning Against Idleness

⁶ In the name of the Lord Jesus Christ,^(A) we command you, brothers and sisters, to keep away from^(B) every believer who is idle and disruptive^(C) and does not live according to the teaching^[a] you received from us.^(D)

² not to become easily unsettled or alarmed by the teaching allegedly from us—whether by a prophecy or by word of mouth or by letter^(A)—asserting that the day of the Lord^(B) has already come.^(C)

¹³ Be on your guard; stand firm^(A) in the faith; be courageous; be strong.^(B)

Closing Appeal for Steadfastness and Unity

4 Therefore, my brothers and sisters, you whom I love and long for,^(A) my joy and crown, stand firm^(B) in the Lord in this way, dear friends!

⁵⁸ Therefore, my dear brothers and sisters, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord,^(A) because you know that your labor in the Lord is not in vain.^(B)

¹⁴ Take special note of anyone who does not obey our instruction in this letter. Do not associate with them,^(A) in order that they may feel ashamed.^(B)

¹⁷ I urge you, brothers and sisters, to watch out for those who cause divisions and put obstacles in your way that are contrary to the teaching you have learned.^(A) Keep away from them.^(B)