There is a process to get to heaven, and Jesus is our key to get there. He is the Great Mediator, the One who knows us perfectly and can help us overcome whatever is holding us back. The purpose of this post was to show that he is willing that all of us return to God. However, not everyone is ready for the commitment at the same time. When a person is ready to take the steps, Jesus is there holding his hands out to help.
I can't believe that people who spent their lives doing good, but who never heard of Jesus, are going to end up in Hell. That would be unfair and wrong. I believe they go to the Spirit World and continue to learn and grow. There are many who come to repentance there, when they are ready to.
Paul speaks to the Corinthians about resurrection, and baptism for the dead, providing that necessary step for those who never had the opportunity in life: (1 Corinthians 15:29)
Else what shall they do which are baptized for the dead, if the dead rise not at all? why are they then baptized for the dead?
It would appear that it is up to us still in the mortal world to provide this baptism for those who died without it, so they can have a fair opportunity to get into heaven, too.
I love that symbolism of baptism: going under the water, which represents the grave, then rising up a new man or woman, a child of Christ. Our old, mal-adjusted selves dead and gone.