anyone who has not received the Gospel is going to hell,
Hi DC. I hope you don't mind me butting in with some comments. This concept of who has received the gospel usually gets pretty distorted. For example, if you met someone who greeted you like this, "Hello, there, I'm born again and spirit filled" you'd probably assume this person had received the gospel. It may be fair enough to give the benefit of the doubt in such cases, but "receiving" the gospel is much more than saying the correct religious phrases or performing the correct religious rituals.
Jesus himself warned that people would say to him, "Lord, we've done many works in your name" .They call him Lord; they believe they have received the gospel, but he will reject them anyway, even calling them workers of iniquity.
In another place he turns to his presumed disciples and says to them, "Why do you call me, 'Lord', but do not obey me"? Again, these people call him Lord; they believe they are saved or that they've "received the gospel", but still, Jesus rebukes them because, for all their flowery praises about how he's Lord, they don't
obey him.
On the other hand, you may find people who do not refer to Jesus as Lord, or who perhaps do not even think of themselves as his followers, of maybe have never even heard his name before, and yet they show love to their neighbors. The opposite will be true, here; they don't call him Lord, and yet Jesus will accept them because they're obeying him.
We humans often reject this concept because we love recognition. We love tradition, ceremony, and pomp. We love respectability and acknowledgement so we tend to not do anything unless there is recognition for it and in our selfishness we assume God must think the same way; e.g. unless a person declares that he's loving his neighbor in the name of Jesus, then it doesn't count. But God doesn't see it that way. What he really cares about is what's happening deep down in the heart.
Often it is those who shout the name of Jesus the loudest who are the furthest from him, much like Jesus recognized when rebuking the religious leaders for much the same thing; he quoted Isiah, "These people honor me with their lips, but their heart is far from me".
The best way to know who has received the gospel is to consider their obedience to Jesus' teachings. If they are at least trying to obey Jesus (like helping the poor, loving their neighbors, and teaching others to do likewise) then, to that extent, they have received the gospel, even if they do not consciously recognize it as "the gospel". The opposite is true; if they are not at least trying to obey Jesus then, even if they make a big stink about praising the name of Jesus, they've not received the gospel.