==Deleted section==  
 I removed the section on Abrahamic religions on the grounds that it is about circumcision, which certainly relates to the penis, but has little to do with the topic of this article which is the "phallus" or erect penis.  The Abrahamic religions, far from worshipping or displaying the phallus, made a considerable issue about keeping the genitals covered.  It is referred to both in the story of Adam and Eve (who cover themselves in shame) and in the story of the Drunkenness of Noah in which one of the sons discretely covers his father's nakedness.   

 I put back the reference to two modern sects, of which one has a stated position of Phallus worship.