19 This truth is clearly set forth by Pius X of saintly memory: Whatever a Christian does even in the order of things of earth, he may not overlook the supernatural; indeed he must, according to the teaching of Christian wisdom, direct all things towards the supreme good as to his last end; all his actions, besides, in so far as good or evil in the order of morality, that is, in keeping or not with natural and divine law, fall under the judgment and jurisdiction of the Church.
Source: Divini Illius Magistri (Vatican.va)