An ancient german song about getting strength from the gods to fight your enemy.
I know they are technically vikings in the video but the saxons used to be similar
when they were pagans and worshipped the same gods.
Lyrics
-----
Old High/Proto German
mit ganzem ellen wol bewart
ein vzerwelter degn
vnt von ir ritterscaft
ek immi swerdą, ek immi derknassun
ek immi fōr sa, ek immi leuhtą
gib mir ellan Wotan, mit gēre, er slahan
gib mir maht Wotan, Ana hengiste, er farit
gib mir kraft Wotan, gewiȥȥa, er