There are some on this board who insist that every person without exception must have heard the gospel, some way, somehow. Some have heard it from missionaries, some from tracts left at the grocery store, maybe some from leaflets dropped from the sky, and some from--well, they're not sure, but it must be so. Jesus is the light that has come into the world, and world always means all, which means everybody.
This despite the fact that the Greeks in Athens were ignorant of Jesus and the resurrection until Paul debated in the marketplace and preached about it at the request of the philosophers on Mars Hill.
Who preached the gospel in Asia Minor before Paul and Barnabas got there?
When Noah and his Sons step off the ark, they had the only knowledge/doctrine of God in the world,
even with this knowledge, man has been falling away ever since.
Ro 2:11 For there is no respect of persons with God.
12 For as many as have sinned without law shall also perish without law: and as many as have sinned in the law shall be judged by the law;
13 (For not the hearers of the law are just before God, but the doers of the law shall be justified.
14 For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:
15 Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another.
16 In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.
God will hold everyone accountable for what they knew or could have known and rejected,
but 'EVERY KNEE" will bow.
God passing judgment on the thoughts/intents of a person's heart is a major obstacle to having been predestine.
Ge 10:1 Now these are the generations of the sons of Noah, Shem, Ham, and Japheth: and unto them were sons born after the flood.
2 The sons of Japheth;
Gomer, and
Magog, and Madai, and Javan, and
Tubal, and
Meshech, and Tiras.
Eze 39:1 Therefore, thou son of man, prophesy against Gog, and say, Thus saith the Lord GOD; Behold, I am against thee, O
Gog, the chief prince of
Meshech and
Tubal:
Gomer, and all his bands; the house of Togarmah of the north quarters, and all his bands: and many people with thee.