Wikipedia
Penitenziagite
Penitenziagite ("Do Penance") is a paraphrase of the greek "πένητες διάγετε" attributed to Christ ("penites diagete"), meaning, live life as a poor.
The phrase was used by the Dulcinian movement founded by Gerard Segarelli (1240–1300) in the 13th century, a movement named after the disciple Fra Dolcino.
The phrase is used in the novel The Name of the Rose by Umberto Eco and in the Jean-Jacques Annaud movie of same name.
A sample of Ron Perlman saying the word appears in the song Endemoniada, the first track on the album The Nephilim, by Fields of the Nephilim.