Complex sentence: Jezebel's story is told in 1st and 2nd "Kings", which details an intense religious-political struggle--the most detailed such account of any period in the history of the Kingdom of Israel.
Split into simpler sentences: Jezebel's story is told in 1st and 2nd "Kings". The story concerns an intense religious-political struggle--the most detailed such account of any period in the history of the Kingdom of Israel.