2 Thessalonians 2:5; 2 Thessalonians 2:11; 2 Thessalonians 3:10; 2 Thessalonians 3:14

5 Do you not remember that while I was still with you, I was telling you these things?
11 For this reason God will send upon them a deluding influence so that they will believe what is false,
10 For even when we were with you, we used to give you this order: if anyone is not willing to work, then he is not to eat, either.
14 If anyone does not obey our instruction in this letter, take special note of that person and do not associate with him, so that he will be put to shame.