What does Romans 5:16 mean?
Paul continues to compare the impact of pivotal choices made by two men at two points in the history of the world. Adam, on the one hand, introduced sin into a world that knew no sin. He was the first to break God's command. That choice caused all born after him to be born into sin. In response, all people lived under judgment for their sin and faced God's condemnation.Jesus, born as a man thousands of years later after many, many had sinned and broken God's law, chose to become the source of God's free gift of grace. He did this by dying on the cross to pay for human sin. His one action brought justification from God for everyone who receives it by faith.
Adam, by sinning, brought death and condemnation to all. Jesus, by not sinning and then dying, brought justification to all who believe. This "justification" is a declaration, as if in a courtroom setting. No person is actually righteous (Romans 3:10, 23), but Christ's sacrificial death pays our penalty, allowing us to have peace with God (Romans 5:1).