What religious traditions developed in ancient civilizations?

What are religious traditions haven't changed over time!?

A few examples of changes that come to mind.

In Christianity baptism was with the person being baptized being naked, usually by immersion, and only of believers upon profession of faith, and included exorcism. Communion was part of a love feast, a full meal, maybe more like a potluck. Worship was more like an unscripted charismatic prayer meeting. Music was without instrumental accompaniment. Christians could not be part of government, especially judges or military service. Marriage use to be only between people of opposite sex.

Judaism used to involve regular animal sacrifices.