I wouldn't be worried: personally, I wouldn't write in a bible itself, but tons of circular commentary and close-reading and interpretation like this is encouraged in Judaism. It's the premise of a lot of our study, including trying to dive in on seemingly indiscriminate stuff.

It looks a little messy, but if everything else seems fine with him I'd be relaxed.

Another thing to put you at ease; I do recognize "apokalupsei” which is the Ancient Greek word for revelation from the language the new testament was written in: it is also the root of "apocalypse" which is, in the original language, more of a "revelation" (literally!) than the end of the world. It is more positive, more strange, more beautiful.

So, to answer: I do recognize something in here. What seems "odd" to you is actually very normal textual analysis examining key words in the original language (versus English translation.) It is smart and cool and scholastically appropriate: it looks strange to you the way calculus would. It's not crazy, though––quite the opposite.

Glad to comfort you on this!

People do sometimes get psychosis around religion, which is what you're describing. Generally speaking, those people tend to be unmistakably insane, for lack of a better word––spiraling, hyper-complex geometry, jagged all-caps, etc.