We are honoured to present this pivotal paper by a senior Danish scholar (born in 1922) that promises to revise many views of Late Neolithic and Bronze Age Europe. Prehistoric daggers found in graves in Scandinavia and beyond have long been interpreted as weapons wielded by warriors, giving the whole period a rather belligerent flavour. In a radical re-interpretation, the author demonstrates that their use was most probably for the despatch of cattle or other livestock, and the dagger is thus the implement of sacrifice and the symbol of its office.