I believe it's an acceptable way to phrase the thought, even if it's an older phrasing. Although me and English don't get along well so I could be mistaken
It is an acceptable use of the word “of”. Similar usage is typical in the ceremonies of various religions, and is actually used in modern times. It is also frequent in old text, books, and scrolls.
It is just another way of phrasing which you may not be familiar with.
Ok thanks.
I was not aware of this phrasing at all. After the first reply, I was hunting in them again and was reading it and I see how it works. (Though very old sounding).
You learn something new every day.