2 Thessalonians 1:8

1:8 With flaming fire he will mete out punishment on those who do not know God and do not obey the gospel of our Lord Jesus.

2 Thessalonians 3:9

3:9 It was not because we do not have that right, but to give ourselves as an example for you to imitate.

3:14 But if anyone does not obey our message through this letter, take note of him and do not associate closely with him, so that he may be ashamed.