I believe it is possible for a person who has never heard the message of salvation in Christ to have a saving relationship with God. Divine revelation is a topic that has interested and bothered me ever since I was a little boy. I would always ask my parents questions about kids in other parts of the world and people of other religions that have never been given the chance to ask Jesus in to their heart. My argument pretty much parallels the argument for natural theology. As Erickson puts it: Creation is the natural and valid revelation of God to all persons, at all times and in all places. All persons possess the rational capacity to comprehend and understand God's natural revelation in creation. Therefore, natural revelation is an adequate means by which people may know and experience a personal and saving relationship with the eternal God. .
I think that people have the ability to be touched by God through nature and the Holy Spirit without necessarily hearing about Jesus. Psalm 19 says "The heavens declare the glory of God; the skies proclaim the work of his hands. Maybe someone in the hills of Fiji was touched by the Holy Spirit or healed by a miracle and they decided to dedicate their life to serving God. If when that person got to heaven I do not believe that God would ask him if he asked Jesus into his heart. The man would have said I do not know who Jesus is, does that mean that he is damned for hell and that God has no grace. A friend of mine once said that he was taught that every person in the world at sometime in his or her life has heard the good news of Jesus and has had the opportunity to give their life to him. I think we, as Christians are close-minded to think that we can reach every person in this world sometime in their life and that if they do not agree with us then they go to hell. I believe God has more grace than that and that his power far exceeds what we can even comprehend.