From the most ancient of times humans have tried to know what will happen in the future or is happening far away or even what has happened in the past.

Introduction to Germanic Paganism

Germanic Paganism: What It Is, And Some Different Ways To Practice

Our most important (and almost only) source for the Pagan religion of the Germans is the Germania of Tacitus, written in the first century. The religion described by Tacitus is very different from the Viking-Age religion described in the Norse sagas, like, an awful lot.