The danger of being judged according to the light you have is that "all have sinned and fallen short of the glory of God", "the wages of sin is death", "there is none righteous, no not one", "no one seeks God" and so on.

Honestly, if EVEN WE as Christians were judged only according to the light we have, we would all be condemned to hell. Because we make decisions that result in so much loss for others.

It is the blood of Jesus Christ that makes us acceptable to God. Without that sacrifice and that cleansing we would have no chance.

Can people enjoy the cleansing power of the Blood of Christ without a revelation of Christ, while they are following after whatever else there may be in this world or in the demonic spirit realm?

I am not saying that Jesus never comes and reveals himself and preaches the gospel to people. Perhaps he does occasionally. But I think we'd see more evidence of it if it was a widespread way of dealing with peoples enslaved in Satan's dark kingdom.

Go into some Buddhist, Islamic or Hindu nation, talk with a thousand people personally, and I doubt that even one in a thousand who has not heard the Christian gospel has any conception whatsoever of saving faith in the Creator God.