Why is the resurrection of Jesus significant for Christians?

The resurrection of Jesus is the cornerstone of the Christian faith. As stated in 1 Corinthians 15:20, 'But now is Christ risen from the dead, and become the firstfruits of them that slept.' This event certifies that Jesus has defeated sin and death, providing a strong assurance to believers of their own future resurrection. By rising from the dead, Jesus assures us that the penalty for sin has been paid in full, and His victory is imputed to those who believe in Him. Thus, the resurrection is not merely a historical event; it is the promise of eternal life and hope for all those who are 'in Christ'.