Quia maior is a papal bull issued by Pope Innocent III in April 1213. In it, Innocent presents crusading as a moral obligation for all Christians and lays out his plan to recapture Jerusalem and the rest of the Holy Land from the Muslims. The longest of the three crusade-related letters that Innocent issued in the same month, it laid the foundation for the Fifth Crusade, which was formally approved by the Fourth Lateran Council in November 1215. Quia maior has since been recognised by historians as one of the most important medieval papal bulls on crusading.