The resurrection of Christ was divine vindication . Christ had prophesied both his death and his resurrection. Without the resurrection, Christ is a false prophet. By the resurrection, he is vindicated against all those who falsely accused him of being a liar and a blasphemer. The resurrection of Christ is the completion of our justification , which Christ accomplished on the cross.
Justification is two-fold, the removal of guilt and the imputation of righteousness.
In his death he paid the penalty for our sins, in his resurrection we receive his righteousness, a righteousness which is declared by the very fact of his resurrection. The resurrection life of Christ is the source of our spiritual life, i.e. regeneration, whereby we share in his resurrection life. Just as Christ was raised from the dead through the glory of the Father, we too may live a new life. The resurrection of Christ vanquished for us the great foe, the last enemy, death. The wages of sin is death.