Nefastus - Glossary - S - Sacramentum

Sacramentum is an oath or vow that rendered the swearer sacer, "given to the gods," in the negative sense if he violated it. Sacramentum also referred to a thing that was pledged as a sacred bond, and consequently forfeit if the oath were violated. Both instances imply an underlying sacratio, act of consecration.

In Roman law, a thing given as a pledge or bond was a sacramentum. The sacramentum legis actio was a sum of money deposited in a legal procedure to affirm that both parties to the litigation were acting in good faith. If correct law and procedures had been followed, it could be assumed that the outcome was iustum, right or valid. The losing side had thus in effect committed perjury, and forfeited his sacramentum as a form of piaculum; the winner got his deposit back. The forfeited sacramentum was normally allotted by the state to the funding of sacra publica.

The sacramentum militare (also as militum or militiae) was the oath taken by soldiers in pledging their loyalty to the consul or emperor. The sacramentum that renders the soldier sacer helps explain why he was subjected to harsher penalties, such as execution and corporal punishment, that were considered inappropriate for civilian citizens, at least under the Republic. In effect, he had put his life on deposit, a condition also of the fearsome sacramentum sworn by gladiators. In the later empire, the oath of loyalty created conflict for Christians serving in the military, and produced a number of soldier-martyrs. Sacramentum is the origin of the English word "sacrament", a transition in meaning pointed to by Apuleius's use of the word to refer to religious initiation.

The sacramentum as pertaining to both the military and the law indicates the religious basis for these institutions. The term differs from iusiurandum, which is more common in legal application, as for instance swearing an oath in court. A sacramentum establishes a direct relation between the person swearing (or the thing pledged in the swearing of the oath) and the gods; the iusiurandum is an oath of good faith within the human community that is in accordance with ius as witnessed by the gods.

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