Risen with Christ

Why is Christianity based on the Death and Resurrection of Christ? Man cannot save himself. Everything of the Old Creation is only worthy of being consigned to judgment and death (Isaiah 53:6). Only then can God bring forth a new creation, a rebirth by resurrection (1Peter 1:3). In His death as the last Adam He took all the sin and curse of the original creation and brought it to judgment thru His death. Then as the 2nd Adam in His resurrection, He became the head of a new creation, the firstborn and first-fruits from the dead, the first of a new breed of redeemed humanity, recreated through their union with Christ (John 14:19, Romans 6:1-11, Colossians 2:12-13, 3:1,10-15, 2Corinthians 5:17, Ephesians 2:1-10, 4:24).