Imperial ban
During the Middle Ages, excommunication was analogous to the secular Imperial ban or "outlawry" under Common Law. The individual was separated to some degree from the communion of the faithful. Formal acts of public excommunication were sometimes accompanied by a ceremony wherein a bell was tolled (as for the dead), the Book of the Gospels was closed, and a candle snuffed out — hence the idiom "to condemn with bell, book, and candle."