Without the resurrection of Christ our faith would be in vain and our hope for eternal life meaningless. This implies an unassailable assurance based on the resurrection of Christ from the dead. His resurrection guarantees ours. God provides His protection from start till finish. He does not abandon the work that He began in the believer.
Present salvation is a foretaste and pledge of the coming and ultimate salvation.
See The Acts of the Apostles , chap. In his epistles Peter proves to be also a theologian in his own right. He refers to God's work of electing, regenerating, redeeming, and judging his people. And Peter defines his doctrine of Christ by disclosing the divinity, humanity, and sinlessness of Jesus. Furthermore, his Christology features Christ's resurrection and ascension.