The most common sort of lectern is in the shape of an eagle with out-stretched wings, standing on a post with a ball on top. The bible is rested on the back of the eagle's wings. The ball on the top of the post represents the world and the eagle symbolises the word of god being spread across the world because of the bible on its back. The eagle can also mean that god is keeping watch over the world because the eagle has very good eyesight. In my suggestions if you want to know more about it then simple go through the site intelligentlecterns.com .