The term 'New Adam' refers to Jesus Christ as the second Adam, who restores humanity's relationship with God after the fall of the first Adam. This concept emphasizes that Jesus, through his life, death, and resurrection, brings redemption and the opportunity for eternal life, contrasting with the disobedience and sin introduced by the first Adam. The New Adam signifies the fulfillment of God's plan for salvation and serves as a foundational element in understanding Christ's identity and nature within Christian theology.