Romans 1-4: Sin and Righteousness

 The Apostle Paul wrote to the church in Rome that he had long heard about but had not been able to visit.  'The wrath of God is being revealed,' he said, 'and has been being revealed from the beginning of time, yet men will not accept it.'
  Although they claimed to be wise, they became fools and exchanged the glory of the immortal God for images made to look like mortal man and birds and animals and reptiles.
   Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another. They exchanged the truth of God for a lie, and worshiped and served created things rather than the Creator—who is forever praised. Amen.
    Because of this, God gave them over to shameful lusts. Even their women exchanged natural relations for unnatural ones. In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed indecent acts with other men, and received in themselves the due penalty for their perversion.
    Furthermore, since they did not think it worthwhile to retain the knowledge of God, he gave them over to a depraved mind, to do what ought not to be done.  They have become filled with every kind of wickedness, evil, greed and depravity. They are full of envy, murder, strife, deceit and malice. They are gossips,  slanderers, God-haters, insolent, arrogant and boastful; they invent ways of doing evil; they disobey their parents;  they are senseless, faithless, heartless, ruthless. - Rom. 1:22-31 NIV

And he told them,  You, therefore, have no excuse, you who pass judgment on someone else, for at whatever point you judge the other, you are condemning yourself, because you who pass judgment do the same things. (Rom. 2:1 NIV)  There is no one who is righteous in his own deeds.   All have sinned.
 “There is no one righteous, not even one;
there is no one who understands,
   no one who seeks God.
All have turned away,
   they have together become worthless;
there is no one who does good,
   not even one.” - Rom 3:10-12 NIV

It's all a matter of faith.  That is the only way we are justified.  Abram believed the LORD, and he credited it to him as righteousness (Gen. 15:6)  Abraham believed God and that established a relationship with God that continued down through the generations.  In that same way, all those who believe in Jesus establish a relationship with God as well.  And just as with Abraham, belief in Jesus gives us a righteousness that we cannot get on our own.  We all sin and we all have the antidote available.  Belief in Jesus Christ.