How do we know that Christ was the last Adam?

The identification of Christ as the last Adam is rooted in Scripture, particularly in 1 Corinthians 15:45-47, where Paul explicitly describes Christ as the last Adam. This title signifies that Christ fulfills the role of the second man, bringing life where the first Adam brought death. Furthermore, the implications of His death and resurrection provide a clear contrast to Adam's disobedience, demonstrating not only God's sovereignty in salvation but also His love for His elect. The depth of Christ’s sacrifice and His victorious resurrection is pivotal for understanding the Christian faith and the assurance of eternal life in Him.