Pope Urban II at the Council of Clermont (1095).
"Let those who have been accustomed unjustly to wage private warfare against the faithful now go against the infidels and end with victory this war which should have been begun long ago. Let those who for a long time, have been robbers, now become knights. Let those who have been fighting against their brothers and relatives now fight in a proper way against the barbarians. Let those who have been serving as mercenaries for small pay now obtain the eternal reward. Let those who have been wearing themselves out in both body and soul now work for a double honor." - Pope Urban II (Wikipedia).Title: The First Crusaders: Their Motivations. Source: Real Crusades History. Date Published: June 22, 2014.