In the KJV it sounds like regeneration and renewing are included in salvation. The NASB also makes it sound like regeneration and renewing are included in salvation. The thing I don't like that the NASB says is that part where it says " deeds which we have done in righteousness". In Isaiah 64:6 our righteousness is compared to " filthy rags"
I’m not trying to make this a KJV only thing, I’m only pointing out that the newer translations define salvation as the washing of regeneration and renewing of the Holy Spirit and that’s why there is so much difficulty in seeing what I’m saying about the verses in the KJV.
Most people don’t read the KJV on a regular basis so it’s harder for them to understand the language. But when one version says something that is completely different from another version, we have to go with the one that’s right rather than the one that’s easier to read.