How do we know that Jesus is alive and able to save?

The resurrection of Jesus is fundamental to our faith; as stated in 1 Corinthians 15:17, 'If Christ be not raised, your faith is vain; ye are yet in your sins.' The resurrection not only validates His claims as the Son of God but signifies God's acceptance of His atoning sacrifice. It assures us that the salvation He accomplished on the cross is applied to us today. Because Christ is alive, He actively works through His Spirit to transform and sustain believers, making Him the source of our hope and assurance for eternal life.