VATICAN CITY (CNS) -- Christian life is a battle each person must fight against the temptation to be self-sufficient and against a paganism disguised as sacredness, Pope Francis said in an introduction to a small book distributed to participants at the synod on synodality. Such "spiritual worldliness," he wrote, "though it be camouflaged with the appearance of the sacred, it ends up being idolatrous because it does not recognize the presence of God as Lord and liberator of our lives and of the history of the world. It leaves us prey to our capricious desires."