Certain prayers prescribed to be offered regularly. Special forms of communion and confession which are mandatory. There often is a specific dress code and other expectations of social and dietetic performance. This all started when Adam and Eve attempted to cover themselves with aprons of fig leaves. This was, of course, already pointing to the Cross.
Religious righteousness can save no one.
God says that this type of righteousness is as filthy rags. 11 External forms of righteousness have always competed with the true faith in Christ as the means of salvation and security. The self-righteousness of religion will defile you. It will lead to a false sense of security and a deadly form of pride. The Pharisee stood and prayed thus with himself, God, I thank thee, that I am not as other men are, extortioners, unjust, adulterers, or even as this publican.