What if I want to choose a different option. I'm against constitution, oaths and anthems. It is a sign and the beginning of the fascism. I'm pro the 'modern' tribalism. Every high-cohesive group should have their own 'accepted' rules. Instead of a common national constitution, social contract & Commonwealth (Leviathan) a la Hobbes or 'Du Contrat Social' of Rousseau I'm for treaties between high-cohesive groups. Society = many different high-cohesive groups together. Each high-cohesive group in a common society needs to have own rules. I'm talking about pluralism, about many 'Du Contrat Social' within a society: be it a federal (non-uninational) state, confederalism between 'tribal' communities . To run a society properly is to make good treaties between people and not to obey to only 1 fascist constitution, since groups with a common society do differ from each other. I don't want to go deeper, since it is not the moment to talk about positive and negative liberty/freedom.
Those treaties between high-cohesive groups have nothing to do with God. We shouldn't involve God into the earthly matters.