A focus on Hoshea, the last king of Israel, makes us realise what the theological problem was which lead to the demise of the Northern Kingdom – they just wanted to be like everyone else.
You can read the written sermon here:
https://www.sermoncentral.com/sermons/9-the-last-king-of-israel-allan-quak-sermon-on-covenant-violated-200286?ref=SermonSeriesDetails