'Irreligious' in the Bible

If one of you has a grievance against an opponent, does he dare to go to law before irreligious men and not before God's people?

and remembers that a law is not enacted to control a righteous man, but for the lawless and rebellious, the irreligious and sinful, the godless and profane--for those who strike their fathers or their mothers, for murderers,

O Timothy, guard the truths entrusted to you, shunning irreligious and frivolous talk, and controversy with what is falsely called 'knowledge';

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

For men will be lovers of self, lovers of money, boastful, haughty, profane. They will be disobedient to parents, thankless, irreligious,

And if it is difficult even for a righteous man to be saved, what will become of irreligious men and sinners?