'Unrighteous' in the Bible

I tell you, make for yourselves friends by means of unrighteous mammon, so that when you fail, they may receive you into the eternal tents.

If therefore you have not been faithful in the unrighteous mammon, who will commit to your trust the true riches?

The Lord said, "Listen to what the unrighteous judge says.

The Pharisee stood and prayed to himself like this: 'God, I thank you, that I am not like the rest of men, extortioners, unrighteous, adulterers, or even like this tax collector.