ISIS, the Islamic terror organization, has released a poster that calls on jihadists to attack the Vatican, according to International Business Times.

The poster says, "Show them the meaning of terrorism. Kill them and do not hold back with your blood the reward is paradise and let them know that you are from an ummah (Muslim community) where mountains bow down to," according to the report.

"We will not forget our revenge for every drop of blood that they have shed," the poster said, according to the International Business Times report.

ISIS and related affiliates have threatened the Vatican and Pope Francis before. Another propaganda poster released around Nov. 20 depicted the pope being beheaded by a jihadist, according to Newsweek.

"It's not surprising to see threats like this against Pope Francis and Christianity, especially during the holiday season. ISIS and its supporters know how to play the media game, and often time the releases of their threats to get the highest amount of attention as possible," said Rita Katz, SITE Intelligence Group director, in Newsweek.