We are justified by faith thought the Grace of Jesus Christ (rather than by works, circumcision, or Law or Moses - Judaism).  We rejoice in the hope of God's glory and suffering that births perseverance, character, and hope through the love of God's Spirit (Holy Spirit).  God gave Jesus to die for our sin while we were still sinners and ungodly, so that we are justified by his blood (death) and reconciled to God by his resurrection (life).  Sin and death were established before Moses' Law, and they both have no regards for the law.  Just as one man (Adam) brought death to all humans by trespassing, so did Jesus bring God's grace ONLY to those who believe by faith.  Judgment of law follows sin to bring condemnation, but grace follows sin to bring justification through Jesus.  The law increased transgression (Judaism), but grace through faith in Jesus brought more righteousness and justification for eternal life through Jesus Christ. 

Romans 6:

Since we are justified by faith in Jesus and sin increases grace does not mean that we can keep sinning.  In baptism, we died to sin with Jesus and we resurrected from death (baptism water) with Jesus into a new life of God's glory. So both sin and death are no longer masters of those who believe in Jesus Christ and live for God.  We are imperfect, but it is the Spirit of God that dwells in us, after we have faith in the death and resurrection of Jesus, that keeps our minds and body away from sin with time.  God's Spirit trains the body to disobey and live above sin with time by offering your body to the righteousness of God.  The reward of sin is death, but that of God's grace is eternal life.     
 

Romans 7:

The law only applies to the living, but Christians died with Jesus and resurrected with him to live for God.  Under the law, we bore fruits for death (lying for protection, joining unholy alliances for survival, or supporting the wrong of the powerful), but now, we are released from the law to do only what brings truth, fairness, and happiness under God's Spirit.  Without the law, sin is dead.  The law only taught us what sin was and how to manipulate the law our advantage.  The law (commandment) is holy, righteous, and good, but it made us know sin and brought the wrong desires that lead to death.  The law is good and spiritual, but it is the sin in me that wants to disobey the law and bring death.  In this world, a Christian is a slave to God's law (grace of God's Spirit) in the mind, but a slave to the law of sin in the body of death.  Our minds of God's laws must supersede any human or earthly law that only puts the body to death.  The result from the Spirit of God's laws puts us above any human law in doing what is noble, godly, and just most of the time. 

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