from ‘the history of the four kings’, punning on ‘the four kings’ (the four playing cards in a pack, each bearing a representation of a king) and ‘the Book of Kings’ (the name of two, formerly four, books of the Old Testament)
Australia—‘charity dame’ 1949—‘charity moll’ 1962—an amateur prostitute who charges less than the usual rate—from ‘Moll’, pet form of the female forename ‘Mary’, the noun ‘moll’ has long been used to designate a prostitute
1609—to add to what is already great, also to add difficulty to difficulty—Pelion and Ossa are two mountains in Thessaly—in Greek mythology, two giants, Otus and Ephialtes, tried to pile Pelion and Ossa on Olympus in order to reach the gods and overthrow them
1727—a labourer of the lowest kind—refers to the enslavement of the Gibeonites by the Israelites in the Book of Joshua, 9:21-27, as it occurs in the King James Bible (1611)
USA, 1978—to commit suicide; to demonstrate unquestioning obedience or loyalty—alludes to a mass suicide, in 1978, by members of the Peoples’ Temple in Jonestown, Guyana, who drank a cyanide-laced drink thought to be similar to Kool-Aid
UK, 1920—an Arab man—‘Johnny’, a pet form of ‘John’, is used, with modifying word, to designate a person, especially a man, of the type, group, profession, etc., specified
UK, 1912—humorous: a Jewish person—refers to the Crossing of the Red Sea, as recounted in the Book of Exodus—coined on various occasions by different persons, independently from each other