Christian Society and the Crusades, 1198-1229: Sources in Translation, Including the Capture of Damietta by Oliver of PaderbornDuring the thirteenth century, the widespread conviction that the Christian lands in Syria and Palestine were of utmost importance to Christendom, and that their loss was a sure sign of God's displeasure with Christian society, pervaded nearly all levels of thought. Yet this same society faced other crises: religious dissent and unorthodox beliefs were proliferating in western Europe, and the powers exercised, or claimed, by the kings of Europe were