Matthew 28:19

Teach all nations. In St. Mark we read, going into the whole world, preach to every creature, that is capable of it; not only to the Jews, but to all nations throughout the whole world, baptizing them, &c. The Anabaptists pretend to shew from this place, that not are to be baptized, unless they be first taught and instructed. This is true, as to persons who are already come to an age, in which they are capable of being instructed before their baptism. But according to the tradition and constant doctrine of the Catholic Church, received also by the pretended Reformed Churches, new born children are to be baptized before they are capable of instruction: nor can they enter into the kingdom of heaven without baptism. --- In the name of the Father, &c. We are made Christians in the name of the Father, and of the Son, and of the Holy Ghost: we profess to believe, and hope for our salvation, by believing, hoping, serving, and adoring the same three divine Persons, from whence the Fathers prove the Father, the Son, and the Holy Ghost to be one God, and equal in all perfections. (Witham) --- Had Christ only said, Lo! I am with you all days; it might, in that case, be limited to the natural lives of the apostles; but as He moreover adds, even to the consummation of the world, it must necessarily be extended to their successors in the ministry, till the end of time. (Estius) --- By these words Go, teach, he gives them the power of teaching not only what relates to faith, but also what is necessarily connected with piety and a holy conversation. For we see added a further explanation, teaching them to observe all things whatsoever I have commanded you; which words, beyond all doubt, must be referred to the precepts of a holy life. How egregiously then must those men be deceived, who infer from the words teach all nations, that faith alone will suffice. What follows, baptizing them, shews another part of the pastoral functions, which consists in the administration of the sacraments. Hence also all heretics are refuted, who pretend to affirm that all ecclesiastical ministry consists in barely delivering the world. (Estius, in different location)