Catechesis: Lord’s Prayer, Third Petition

So he [the devil] provokes the world against us, fans and stirs the fire, so that he may hinder and drive us back, cause us to fall, and again bring us under his power. Such is all his mind, will, and thought. He strives for this day and night and never rests a moment. He uses all his arts, wiles, ways, and means that he can invent.—LC III:63, 64