Of Him and To Him

What kind of things is Christianity divided on and does it really matter without a right view of Christ? How were they really mocking when they asked about the resurrection? How is heaven all about Christ and not a continuation of our earthly lives? How is Christ our faith and our hope on this earth made manifest in heaven? Did Christ make His children free from the power, the curse and the presence of sin? What is the first resurrection and where and when did it take place? Were those that mocked Christ actually glorifying Him?