 Religion is an important part of life for many of the peoples of Spira , with a large majority of the population describing themselves as " <unk> . " Though by the end of Final Fantasy X some people had begun to question them , nevertheless the teachings of Yevon were millennium @-@ old and heavily influential . The Yevonite clergy taught that Sin was a divine punishment set upon the people for their pride in the use of machines . As a result , the temples forbade the use of modern technology , and promoted a culture of atonement for past sins in the hopes of appeasing sin . 
