The inhabitants of Samaria will be in terror for the calves of Beth Aven; For its people will mourn over it, Along with its priests who rejoiced over it, For its glory, because it has departed from it.
So, because they had broken the covenant with God, they were swearing falsely when they made that covenant with God, thus God's judgment is gonna spring up upon them, just like weeds, the poison weed of hemlock just grows up in the fields.