It is completely true that everyone who is saved is saved through the judicial atonement of Jesus. Without that, nobody could be saved.
But that doesn't mean that everyone must literally know the name of Jesus. The OT saints obviously did not.
Job--who was not connected to the promise of Abraham--did not know the name of Jesus...but he knew God and still realized that he needed a mediator between him and God. So although he didn't know the name of Jesus, he knew he needed Jesus.
Personally I only feel that being Christian that I have an advantage in salvation (not an assumption) since I have heard the Gospel and faith requires trying to live by it. The Lord calls us to love God and our neighbor (Matthew 22:36-40 etc.) & to treat others by this understanding (Matthew 7:1-12). St. Paul sums up salvation by grace & to live it doing good works & not boast in Ephesians 2:8-10. Our Lord continually calls us to ask forgiveness of our sins in His prayer (Matthew 6:9-13) while praying for ourselves & others.
"Membership has its benefits," as AMEX used to say. To be a member of the Body of Christ and to know not only that God exists but that God has a plan--a plan for your benefit--is a great benefit.
Since we are not to judge our neighbor, the Bible clearly indicates God will take into account those who through no fault of their own (whether in ignorance, honest misunderstanding, or because it was misrepresented etc.) did not hear the Gospel but did what was good will be saved (see Matthew 12:31-32, Psalm 15, Ezekiel 33:10-20, Daniel 12:1-4, John 5:22-29, Matthew 25:31-46, Romans 2:6-16, Romans 9:14-18 etc.).
Yes, I think it's pretty clear that God is not neutral but is specifically biased toward salvation (He said so in scripture, twice, that His default position is salvation) and takes the knowledge that a person has into consideration in His judgment.
I would add the book of Jonah. God clearly refused to destroy the Ninevites until they'd heard a witness of Him, and He specified their ignorance as His reason.
I would also add, as counter examples, the stories of Jericho and Sodom. In both cases, we see that they knew enough about God to have responded to Him. Their knowledge is what condemned them.
Jesus said to the Pharisees, "If you were blind, you would be innocent. But because you say, 'We see,' your guilt remains."
Jesus also said:
And that servant who knew his master's will but did not get ready or act according to his will, will receive a severe beating. But the one who did not know, and did what deserved a beating, will receive a light beating.
Everyone to whom much was given, of him much will be required, and from him to whom they entrusted much, they will demand the more. Luke 12
When Paul preached to the philosophers on Mars' Hill, he told them that the Unknown God they worshipped in ignorance was, in fact, the true God--they were not unlike Job in that respect. Paul's mission to them was to give them the information they could not gain from their observations of the heavens (Psalm 19, Romans 1): Who God is and what His plans are for them.
I suspect that Job, as well, gained his knowledge of God's existence from observation of the heavens because only with Job did God reference constellations.
