1 Thessalonians 4:5
not in passionate lust, as the [unconverted] Gentiles, who do not know God, do.
2 Thessalonians 1:8
He will inflict punishment on those people who do not know God [as Savior], and on those who do not obey the Gospel message of our Lord Jesus.
Romans 1:28
And since these people refused to acknowledge God, He has allowed [or, abandoned] them to have degraded minds and to practice those things which they should not do.
Titus 1:16
These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.