[Petronski]

While all teaching required for salvation can be found in scripture, not all teachings need be found there.

So then sola Scriptura is not required for salvation.

[Mr Rogers]

No. No one needs to know what Sola Scriptura means, let alone agree with it, to be saved.

I’m pretty certain the Ethiopian eunuch didn’t discuss the issue with Philip. It didn’t prevent his salvation or baptism.