Religion

There need to be a few different religions. Some will coexist without issue and others will not.

Things to be addressed:
 * Funeral & Burial Practices
 * Burial Mounds
 * Holidays
 * Marriage
 * Eunuchs & Circumcision

Burial Mounds

 * the more important the person the larger the mound
 * often in the shape of letters or pictorgrams
 * largest mounds excavate surrounding area to form moats
 * some are large enough to become foundations for cities
 * an undignified or dishonored person receives a flat burial or none at all

Judaism
Korban, a variety of sacrificial offerings as commanded in the Torah.

Hinduism & Buddhism
Mudra, a symbolic ritual or gesture, mostly performed with the hands and fingers. Rajas, one of three gunas (qualities) along with Sattva and Tamas.

Norse Religion
Runic magic, evidenced in use of runes from the Roman to the Germanic Iron Age.

General
Arianism, belief that JC is the son of God the Father and therefore subordinate. Lotta crazy shit in the links here. Seed of the woman, given a Messianic interpretation in Christianity.

Ukrainian Orthodox Church
They liked them some cave monasteries.

Vatican Hijinks
Nostra aetate, Declaration on the relation of the Church with Non-Christian Religions (1965), originally titled Decretum de Iudaeis (Decree on the Jews). Vox in Rama, papal bull issued by Pope Gregory IX condemning heresy and satanism (1232).

Factions
The goliards were clergy writing bibulous, satirical poetry from universities in the 12th and 13th centuries.

Chinese Folk Religion
Mythology thereof.

Gnosticism
Not sure what to say here.

Roman and Greek Religious Practices
Mithraism, or the Mithraic mysteries.

Ancient Mesopotamian Religion
Religion of the Sumerians, Akkadians, Assyrians, and Babylonians.

Zoroastrianism
Based on this motherfucker, also known as Zarathustra.

Proto-Indo-European Religion
Not directly attested, but reconstructed based on similarities in deities and religious practices of the peoples that follow.

Ancient Irish Mythology
Pre-Christianity, much did not survive advent of Christianity but some still preserved in medieval literature.

Pacific Northwest
Raven tales, creation myths of the people indigenous there.

Other
National mysticism, a form of nationalism.

William Blake's mythology is pretty badass.