Killing is evil but can be legitimate in self defence or to prevent killing.

Musket,
Like I said. Thou shalt not kill. It isn't difficult and it's what schoolchildren "the length and breadth of the land" had drilled into their heads in RE classes,

No. No churches or schools would use the KJ version with children.

what every vicar and priest in the country says to their parishioners, being apparently the word of God.

No. Few use the KJ version and they still call it the word of the Lord.
Ask your vicar relation.