When one claims that to go to Heaven it would be enough to be good, he would need to be a bit skeptical about it. The reason is that the good is not easily agreed upon by many. Granting that we unite around what we need to do good, it would still not be enough to make it. We would need to believe certain truths of Faith that Jesus Christ would want us to lay our lives down for. One of these truths is that about the Resurrection of the Lord. Our Lord continues fortifying the faith of His followers by appearing to them and designating them as witnesses of His Resurrection. His Resurrection involved His Body as well. The risen Christ insisted that they see Him as a resurrected body and soul. He was not just an embodied soul. He was genuinely body and soul, in one Person, Jesus Christ. Hence, He asks His disciples for something to eat and He eats the fish in front of them all. Our resurrection will also include our bodies.
