Why is it significant that Christ is referred to as the 'last Adam'?

The designation of Christ as the 'last Adam' highlights the typological comparison between Him and the first Adam. Just as sin and death entered through one man's disobedience, life and resurrection come through another's obedience—Christ’s atoning work. This is emphasized in Romans 5:12-21, which contrasts the consequences of Adam's sin with the redemptive grace found in Christ. By acknowledging Christ as the last Adam, we recognize that He restores what was lost, offering new life and reconciliation to all who are united with Him in faith.