Understanding a society's view of the soul is the key to understanding its religion. Part of the soul lives in the blood, the other part lives outside at night. A person dreaming can become this other soul. If this other soul escapes and cannot be recovered, the person will die. In State-level Societies, one lineage becomes special by becoming the lineage.
World is on the back of a crocodile.
The dead emerge at night as the sun enters the underworld. Offerings are placed in houses to placate the ancestors. The acropolis of the Main Group at Copan was an artificial stone mountain from which to worship ancestors. Temple 22 was a model of the cosmos. Folk religion still practiced in houses.