Actually the "G" in the middle of the Free Masons' symbol stands for "God". Ergo, it has nothing to do with him worshiping the devil. Hova is doing his normal routine of essentially calling himself the god of the music industry, more or less.
"You guys dont even know what that sign means... ", its got to do with freemasonry and jay-z worshipping the devil but at the end of the day who gives a fuck. Thats just how it is, there are much worse happening in the world such as people dying from war and hunger. People have better things to worry bout rather than Jay-Z. Its pretty shocking though what people have come up with truth or not.