Oh, not that bad. Some parts are as dull as the slow sections of the Old Testament, but even in those passages, there will be a well-turned phrase or a sharp bit of irony to keep you going until the fighting starts again.
The language is intentionally grandiose and mythic, but you get used to it, just as you get used to Dumas or Tolstoy after a hundred pages or so.
Or Stephen king.
Or Melville! LOL!
(JFTR, I have just finished reading “Moby Dick” for the fifth time.)