"Forever" question

I was looking at the shorthand comparisons chart showing The Lord's Prayer in different versions and was struck by the word "forever" is Gregg, which is written disjoined f ev.

I have always written forever as f (for) e v joined. I looked in my 1916 dictionary to see if there was a conflicting word such as fever, fervor, etc., but didn't find anything written f e v.

Anyone have a comment as to why the disjoined version might be preferable to joining the "for and ever" ??

(by wordwrangler2 for everyone)