God is faithful. He brings “a righteousness from [Himself], apart from law.” This righteousness “comes through faith in Jesus Christ to all who believe.” (Romans 3:21,22) All people “sin and fall short of the glory of God.” (Romans 3:23) All people “are justified freely by His grace, through the redemption that comes by Jesus Christ.” (Romans 3:24)
God is faithful. “Let God be true, and every man a liar.” (Romans 3:4)
“There is no one righteous, not even one; there is no one who understands, no one who seeks God. All turn away.” (Romans 3:10-11,12) “There is no fear of God before their eyes.” (Romans 3:18)
So, what point is Paul making? He’s saying, “Let God be true; every man is a liar!” “Every mouth is silenced and the whole world is held accountable to God. Therefore no one is declared righteous in His sight by observing the law; rather, through the law we become conscious of sin.” (Romans 3:19,20)
Now we are not left “conscious of sin.” Rather than leaving us drenched in guilt, God provides us a simple albeit costly solution. God “justifies those who have faith in Jesus.” (Romans 3:26)
Therefore, says Paul, boasting is excluded. Pride in self is inappropriate for “we maintain that a man is justified by faith apart from observing the law.” (Romans 3:28)
Let God be true. Let God be faithful.