A written volume of work said to have been written by Protestant Reformer John Wycliffe in the early 15th Century AD, ''The Lanterne of Light'' (Old English), was among one of the earliest works which attempted to classify Demons, which was (more or less) accepted as rote within the early Protestant Church of Europe. The main core of The Book detailed the matching Demons with specific Sins. These were – Pride, Envy, Greed, Sloth, Wrath, Lust and Gluttony. The invoking of the very names of The Demons assigned to these Sins, was seen as not only ''bad luck'', but a gateway to summoning their presence. Published in 1409, The Book would go on to form many Western Religious Beliefs regarding Demons and their abilities.