What would you call a form of government where the community governs itself?

Let us suppose that there was a society that existed on a communal level where there weren’t really any formal official laws, but rather the community sort of liquidly governed itself, using de facto social norms and social values that are strongly ingrained and maintained in the community through tradition and culture, and instead of formal laws everything was basically fluidly governed by the community at large through what is de-facto? Basing governance on what is commonly accepted by the community and having the community enforce it by itself without an external government. This community would place a religion at its center, and the culture and values within it would be derived from that religion.