Deuteronomy 16:21
It says "You shall not set up a sacred post -- any kind of pole beside the altar of the LORD your G od that you may make -- or erect a stone pillar; for such the LORD your G od detests."
What does this mean?
My first thought was that it meant flag poles, such as an American flag pole, or an Israeli flag pole in Israel, or all those flag poles at United Nation buildings. And I was thinking that it might mean that you're not supposed to do this because it's an idol of the nation-state, or it shows you have too much patriotism and nationalism in your heart (putting that before God).