Anathema Maranatha

an expression commonly considered as a highly intensified form of anathema. Maran atha is now considered as a separate sentence, meaning, "Our Lord cometh."
- 1 Cor. xvi. 22

See also: Anathema

References in classic literature ?
To do anything THEY have never done is anathema maranatha. You are the first Avonlea girl who has ever gone to college; and you know that all pioneers are considered to be afflicted with moonstruck madness."