I received the following question:

You mentioned that there are multiple downsides to Gentiles fearing God and working righteousness (Acts 10:35.) One is that there is no means of forgiveness to those who failed to work righteousness, except in Christ. Are you saying that if they break the law that is in their conscience, they cannot be forgiven unless they then learn about and trust Christ? Romans 2:15

Not necessarily. Read Ezekiel 18 in this light. Ezekiel 18:27 sums it up.

27. Again, when a wicked man turns away from the wickedness which he committed, and does what is lawful and right, he preserves himself alive.

Yet that is a difficult way to approach salvation. When you have killed someone, for example, there is no bringing that person back. Living lawfully and rightly after that does not erase what was done. How does one know he has lived right enough, or turned from wickedness enough? Faith in Christ frees one from all this. It is a great blessing.