8 He will punish those who do not know God and do not obey the gospel of our Lord Jesus.

Read 2 Thessalonians 1:8 Using Other Translations

In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
in flaming fire, inflicting vengeance on those who do not know God and on those who do not obey the gospel of our Lord Jesus.
in flaming fire, bringing judgment on those who don’t know God and on those who refuse to obey the Good News of our Lord Jesus.