Teaching skills relevant to an Inner Spiritual Struggle, such as concocting poisons and explosives. "Italy: Group used mosque as terror camp," from the [1] Associated Press:

ROME - Italian police arrested three Moroccans — an imam and two of his aids — they accuse of being part of a militant cell that allegedly used a mosque in a central Italian city as a terror training camp.

The group held courses on hand-to-hand combat and used propaganda films and documents downloaded from the Internet to teach how to prepare poisons and explosives, pilot a Boeing 747 and send encrypted messages, anti-terrorism police in Rome said in a statement. A fourth Moroccan was still being sought, the statement said.