A Britoun book, written with Evaungiles,
Was fet, and on this book he swoor anoon
She gilty was, and in the meene whiles
An hand hym smoot upon the nekke-boon,
That doun he fil atones as a stoon.
– Geoffrey Chaucer
The Canterbury Tales, The Man of Law’s Tale. King Alla wants to test the veracity of the knight’s evidence. So he has him swear on a British book of the gospels. The moment the knight swear his evidence of Constance’s guilt a hand strikes him on the neck-bone and he falls down like a stone, his two eyes bursting out of his face. Instant divine judgment!