Here is an excerpt from Giulio Cesare’s “De Bello Gallico”. In the extract the religious customs of the ancient Germans are explained, obviously according to the vision of Caesar.

Original latin text about the ancient germans religious customs

Germani multum ab hac consuetudine differunt. Nam neque druides habent qui rebus divinis praesint neque sacrificiis student. Deorum numero eos solos ducunt quos cernunt et quorum aperte opibus iuvantur, Solem et Vulcanum et Lunam; reliquos ne fama quidem acceperunt. Vita omnis in venationibus atque in studiis rei militaris consistit: ab parvulis labori ac duritiae student. Qui diutissime impuberes permanserunt, maximam inter suos ferunt laudem: hoc alii staturam, alii vires nervosque confirmari putant. Intra annum vero vicesimum feminae notitiam habuisse in turpissimis habent rebus . Cuius rei nulla est occultatio, quod et promiscue in fluminibus perluuntur et pellibus aut parvis renonum tegimentis utuntur magna corporis parte nuda.

Source: “De Bello Gallico“

English translation of the text

The Germans differ a lot from these customs (those of the Gauls). In fact they do not have druids who take care of religious rites and are not interested in sacrifices. They consider in the number of gods only those who see and of the help of which they openly benefit, (and these are) Sun, Vulcan and Moon; others do not even know them by reputation. Everyone’s life consists of hunts and military exercises: as children they get used to work and fatigue. The longer they remain chaste, the more praises they receive from their neighbors: they believe that this increases the stature, strength and vigor. They consider it very shameful to have had a relationship with a woman before the age of twenty. Of this (of sex) they do not make mystery, because they wash together promiscuously in the rivers and they dress with skins or with garments (called) renones with a large part of the naked body.