If the Resurrection of Jesus didn’t happen, believers have no hope of Heaven and the Bible isn’t true.
But Jesus was seen after the resurrection by Cephas, the twelve, five hundred brethren at once, James, all the apostles, and the Apostle Paul on the Damascus Road (1 Cor. 15:4-8).
1 Corinthians 15:19-20 If in this life only we have hope in Christ, we are of all men most miserable. But now is Christ risen from the dead, and become the firstfruits of them that slept.
The good news of the Gospel today is that the victory that Christ won on the cross, through the tomb, and above the clouds, is available for you and me. All who believe on Jesus will have everlasting life.