2 Kings 17:24-41.  After Assyria conquered the cities of Samaria, they established colonies there with exiles from various other conquered nations. These nations brought their own idols, and served them. To protect them from a sudden infestation of lions, they were also provided with a priest who could teach them the law of the LORD.  The resulting pluralism and syncretism did not please the LORD.

LORD, forgive us for believing the lie that we could be faithful to you and other gods at the same time. Cleanse our households.