1 Corinthians 15:13

Christ not risen. If a resurrection of the dead is considered to be impossible, and belief in it to be absurd, then it must follow that Christ did not rise from the grave, for the general objection to the resurrection of the dead would apply in His case also. Therefore it is not possible to deny the general resurrection without denying the well-established resurrection of Jesus. This, says Paul, is the inevitable result of denying the resurrection, and involves a denial of Christianity, the removal of the Christian’s hope of eternal life.