No one predates Christ. At a minimum everyone has certain revelation of Christ written on their heart. If this is the limit of their exposure this is the standard they are held to. The Bible makes clear one is accountable to the extent of God's revelation to them, however, the greater revelation the greater responsibility. All the elect are provided a path to Jesus.
No one predates Christ? What? A certain revelation written on their heart. Excuse me?
I take the C.S. Lewis approach to this subject. Just as no one can do evil in the name of Christ, no one can do good in the name of a false prophet (pick your poison). A person who lives a good life as defined by the Bible can get into Heaven — note I’m not saying will. This doesn’t mean that someone who knowingly rejects Christ but still meets the ten commandments will get into Heaven — that’s a horse of a different color.
Too tired to go into the theology I’m trying to expound — go read The Last Battle by C.S. Lewis.