Excommunication: Did you mean...?

The printing press, credited to the German inventor and printer Johannes Gutenberg (l. c. 1398-1468) in the 1450s, became the single most important factor in the success of the Protestant Reformation by providing the means for widespread...

The Crusades were a series of military campaigns organised by Christian powers in order to retake Jerusalem and the Holy Land back from Muslim control. There would be eight officially sanctioned crusades between 1095 CE and 1270 CE and many...

The Index of Prohibited Books (Index Librorum Prohibitorum) was a list of written works condemned as heretical or injurious to the Christian faith by the Catholic Church at the Council of Trent in 1563. It remained in effect until 1966 when...

Exsurge Domine (“Arise, O Lord” in Latin) is a papal bull issued 15 June 1520 by Pope Leo X (served 1513-1521) condemning Martin Luther’s 95 Theses as heresy along with any other works by Luther or those who supported him. Luther burned the...

As the Protestant Reformation emerged in France in the early 16th century, the city of Meaux became one of the first centers of controversy. Bishop Guillaume Briçonnet II undertook a campaign to reform the Catholic Church from within and...

A copy of the Declaration of Arbroath. On 6 April 1320 CE a letter was sent to the Pope requesting a withdrawal of Robert the Bruce’s excommunication and the placing of Scotland under an interdict, both applied because Robert had refused...

This beautifully engraved title page from a 1612 edition of the collected works of St. Bede contains a wonderfully stern admonition pasted onto to it at the bottom that threatens excommunication for anyone who might misappropriate the book.