Why is the concept of Christ as the last Adam important for Christians?

Understanding Christ as the last Adam is crucial for Christian faith as it illustrates the contrast between the first Adam, who brought sin and death into the world, and Christ, who brings life and redemption. Romans 5 teaches that through Adam’s transgression, death reigned, but through Christ, the last Adam, all those united with Him will be made alive. This theological truth affirms the entire redemptive plan of God, showcasing how believers are reconciled to God through Christ's obedience, where Adam failed. Hence, the last Adam's sacrificial death and resurrection restore what was lost in the Garden of Eden.