It isn't even in King James English. It's an
imitation of this elevated 'churchy' style such as you could expect to find in the KJV and other Bibles from earlier eras when such style was actually rather normal (hence people knew things like how to properly decline the appropriate classes of words), but poorly done. I've posted about this before only to have Mormons complain that the source I pointed them to (Richard Packham's website) is the work of an atheist who also says things about the Bible that Christians would disagree with, so how can I view him as a trustworthy source!?

(Nevermind the fact that I was pointing out his language studies, and the English language works the same regardless of the personal religious convictions of whoever is using it.)
As someone with a master's degree in Linguistics (not from an LDS-run university), looking into a question like this provides everything I need to know that Mormonism is a sham, but I can understand Mormons not wanting to face up to that fact, and hence treating everything like it's a matter of scholars' personal opinions, about which any two may differ, even though that is very much not the case (there aren't in fact many different views among disinterested linguists concerning the non-existence of 'Reformed Egyptian', or how pronouns worked in KJV-era English, etc. -- these are things that are as definitively known as anything can be); rather, much LDS-promoted work in this area is quite simply not very scholarly to begin with, for a multitude of reasons I've probably spent the equivalent of years addressing here on CF already.