So one of the cohanim they had carried away captive from Shomron came and lived in Beit-El, and he taught them how they should fear HaShem.
The Land of Israel is so holy that it could not stand for pagans practicing their rituals within its boundaries. King Ashur tried to appease HaShem by having a cohen teach the people he had placed in Israel’s borders how to avoid HaShem’s wrath. This idea came from Man, and the various nations dwelling in Israel didn’t take to heart the cohen’s instructions, but the passage makes it sounds like the lion attacks relented. What an amazing account. We who know that the whole earth belongs to our Maker should seek to learn his ways and follow them, rejecting all forms of ungodly rituals.