'Impiety' in the Bible

For out of the heart proceed wicked thoughts, murder, adultery, fornication, theft, perjury, impiety of speech.

Then the High Priest tore his robes and exclaimed, "Impious language! What further need have we of witnesses! See, you have now heard the impiety.

For God's anger is being revealed from Heaven against all impiety and against the iniquity of men who through iniquity suppress the truth. God is angry:

But from irreligious and frivolous talk hold aloof, for those who indulge in it will proceed from bad to worse in impiety,