Verses with the word unrighteous in the New Testament (4 verses):

Luke 16:11
If therefore ye have not been faithful in the unrighteous mammon, who will commit to your trust the true riches?

Romans 3:5
But if our unrighteousness commend the righteousness of God, what shall we say? Is God unrighteous who taketh vengeance? (I speak as a man)

1 Corinthians 6:9
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,

Hebrews 6:10
For God is not unrighteous to forget your work and labour of love, which ye have shewed toward his name, in that ye have ministered to the saints, and do minister.