This first command is a direct prohibition against idolatry and polytheism. Idolatry is image worship, or the giving of divine regard to created objects. The different forms include: fetishism, nature, and hero worship( Easton ). Polytheism is the believe that there’s more than one God. In this view, some gods are equal, and in others, they are in a hierarchy. This first command differentiates between God and gods. It is upon this foundation that the entire Mosaic law is built( Deut.5:6-7 ). God explains why that had to be so. He alone led them out of bondage. Isaiah follows that up by explaining that other gods are blind and powerless( Isa. 43:10; 44:9-10 ). In the New testament, Paul warns against the worship of other gods( Col.2:18 ). Jesus Christ sums it up in the Sermon on the Mount that you can’t serve two masters( Mat.6:24 ). What occupies you more than God may actually become god worship to you. Today, men pursue wealth, to the detriment of their soul. That aught not to be so. What is more important than God in your life?
Thou shalt have no other gods before me. Exodus 20:3 KJV