Get yourself a Bible with a single-column format and a bigger font.

Write down what you see when the text changes and decide if it enlightens or speaks against the message of the Bible. It may be a revelation from God or it may be demonic. Test the spirits.

Pray on this matter before you read, and see if it makes a difference.

For example the Two Witnesses in Revelation 11 the word changed from Egypt to Elijah, maybe they both begin with the same letter and I imagined it I don't know, but people do speculate that one of the witness to be him.

Maybe there are slightly different realms within the world it self, this realm could be specifically human while others more Angelic and are on the dark end there are specifically demonic realms because all three realms exits for different purposes and maybe more.

Sometimes glimpses or feelings of these different but same realms have slight transitional variations that can just about be seen, while at other times no one can tell the difference, it is not a threat by man if we can see a little more but does mean people can sense something else exits that we are not part of for different reasons

As time nears maybe prophecy will open up like a computer code or text that reveals a language only for that period of time while the same word could mean a million different things to people all at the same time so it all makes sense but in all different ways and all in one way too.

I also seen a few examples outside the Bible too which I found interesting, although it might seem offensive but it does make spiritual sense.

I saw an Internet Cafe' its sign changed to 'Internet Filth'
I was reading a book and saw a flag, it changed to 'Slag of Pakistan'

Maybe as bad or offensive it may seem trying to describe it does make spirtual sense, and I never use wording like slag or filth in my language, if it's God way of showing something then why not this way, can not be proven either way.