E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Judicium Dei (Latin).
The trial of guilt by direct appeal to God, under the notion that He would defend the right even by miracle. There were numerous methods of appeal, as by single combat, ordeal by water or fire, eating a crust of bread, standing with arms extended, consulting the Bible, etc., etc.
