The popular Mission is a simple way to preach the Gospel of Jesus Christ to the whole People of God. It is the fulfillment of Christ's missionary mandate: “Go into all the world and preach the gospel to every creature. Whoever believes and is baptized will be saved, but he who does not believe will be condemned” (Mk 16:15-16 ).

The purpose of the popular Mission is taken from the missionary mandate of Christ, and is well expressed by St. Louis de Montfort who indicates the purpose as "renewal of Christianity in believers" and also by St. Alphonsus Liguori, who says "The purpose of the missions is the conversion of sinners."

Blessed John Paul II teaches that popular Mission “is effective when ... it impels to conversion of heart, that is, to the return to the truth and friendship of God for those who have lost faith and grace due to sin, it calls routine Christians to a more perfect life, stirs up fervor in souls, convinces the faithful to live the beatitudes, and awakens priestly and religious vocations.”

The fundamental principle governing all missionary activity of our religious family is the revelation of the salvific will of God; it is the rule that St. Paul conveyed to his disciple Timothy, bishop and missionary: "God wants all men be saved and come to the knowledge of the truth "(1 Tim 2:4).

Therefore we, the missionaries of the Incarnate Word, convinced that God has not predestined anyone to eternal damnation, put all the ordinary and extraordinary means so that all men attain to salvation through Jesus Christ, the only Savior, even to the point of saying as San Luis Orione did: "Place me Lord, in the mouth of Hell, so that I, by your mercy, may shut it.