What does the Bible say about representation in salvation?

In Romans 5, the Apostle Paul outlines the concept of representation as integral to the doctrine of salvation. Paul explains that through one man's sin, Adam, all humanity is condemned, as sin entered the world and death through that sin. This designates Adam as a federal head or representative for all men, indicating that all are counted as sinners because of his disobedience. Conversely, through one man's obedience, Jesus Christ, many are made righteous, emphasizing that Christ serves as the representative for those whom He redeems. This dual representation highlights the pivotal role Christ plays in the salvation of the elect, contrasting with the hopeless state of all in Adam, showing that true hope and justification come through Christ alone.