Since man was in rebellion against God, God reached out to man and provided salvation for him. Only God can provide the righteousness needed to obtain a right standing with a holy God. This righteousness is obtained through Jesus Christ’s death on the cross, and man receives this righteousness through faith. This faith does not cancel out the Law, rather it satisfies the legal requirements of it (Romans 3:31).
Faith justification is the only kind possible because it removes any natural advantages (3:27–31). This is not a new teaching, because the Old Testament even teaches faith justification. Abraham was not justified by his works (4:1–8), or by circumcision (4:9–12), or even by the Law (4:13–17). One can only be justified by faith, just as Abraham was (4:1–17).
Justification has many benefits (5:1–11). The one who is justified now has peace with God and a hope in God. Also, he now has a right standing before God (5:1–2). The one who is justified can boast in many things (5:2-11). He can boast in the hope of God’s glory. He can also boast in troubles, because those troubles will bring about perseverance, proven character, and hope (5:3–5). Since God demonstrated his love to a world that was in rebellion against him by sending his unique Son to die for the ungodly (5:6–10), the justified can boast in God, because he is now in a right relationship with God (5:11). Thankfully, since God sent his Son, man’s sin problem is now solved (5:12–21).