I don't know much about the different parchments that the KJV or other bibles are translated from, but I have a question as to why this verse is translated so differently between KJV and say ESV and other versions.
Luk 9:54 And when his disciples James and John saw this, they said, Lord, wilt thou that we command fire to come down from heaven, and consume them, even as Elias did?
Luk 9:55 But he turned, and rebuked them, and said, Ye know not what manner of spirit ye are of.
Luk 9:56 For the Son of man is not come to destroy men's lives, but to save them. And they went to another village.
Luk 9:54 And when his disciples James and John saw it, they said, "Lord, do you want us to tell fire to come down from heaven and consume them?"
Luk 9:55 But he turned and rebuked them.
Luk 9:56 And they went on to another village.
54When the disciples James and John saw this, they asked, "Lord, do you want us to call fire down from heaven to destroy them[a]?" 55But Jesus turned and rebuked them, 56and[b] they went to another village.
There is a chunk of red text that's left out of the ESV and NASB as well as many other Bible versions. Was it because of differences in the manuscripts?