III. The Intention of the Celebrating Minister. Such doctrinal diversity, regarding the very notion of God, prevents the minister of the Church of Jesus Christ of Latter-day Saints from having the intention of doing what the Catholic Church does when she confers Baptism, that is, doing what Christ willed her to do when he instituted and mandated the sacrament of Baptism. This becomes even more evident when we consider that in their understanding Baptism was not instituted by Christ but by God and began with Adam (cf. Book of Moses 6:64). Christ simply commanded the practice of this rite; but this was not an innovation. It is clear that the intention of the Church in conferring Baptism is certainly to follow the mandate of Christ (cf. Mt 28,19) but at the same time to confer the sacrament that Christ had instituted. According to the New Testament, there is an essential difference between the Baptism of John and Christian Baptism. The Baptism of the Church of Jesus Christ of Latter-day Saints, which originated not in Christ but already at the beginning of creation (James E. Talmage, Articles of Faith [AF], Salt Lake City: Desert Book, 1990, cf. pp. 110-111), is not Christian Baptism; indeed, it denies its newness. The Mormon minister, who must necessarily be the “priest” (cf. D&C 20:38-58.107:13.14.20), therefore radically formed in their own doctrine, cannot have any other intention than that of doing what the Church of Jesus Christ of Latter-day Saints does, which is quite different in respect to what the Catholic Church intends to do when it baptizes, that is, the conferral of the sacrament of Baptism instituted by Christ, which means participation in his death and resurrection (cf. Rom 6,3-11; Col 2,12-13).
We can note two other differences, not as fundamental as the preceding one, but which also have their importance:
A) According to the Catholic Church, Baptism cancels not only personal sins but also original sin, and therefore even infants are baptized for the remission of sins (cf. the essential texts of the Council of Trent, DH 1513-1515). This remission of original sin is not accepted by the Church of Jesus Christ of Latter-day Saints, which denies the existence of this sin and therefore baptizes only persons who have the use of reason and are at least eight years old, excluding the mentally handicapped (cf. AF, pp. 113-116). In fact, the practice of the Catholic Church in conferring Baptism on infants is one of the main reasons for which the Mormons say that the Catholic Church apostatized in the first centuries, so that the sacraments celebrated by it are all invalid.
B) If a believer baptized in the Church of Jesus Christ of Latter-day Saints, after renouncing his or her faith or having been excommunicated, wants to return, he or she must be rebaptized (cf. AF, pp. 129-131).
Even in regard to these last elements it is clear that the Baptism of Mormons cannot be considered valid; since it is not Christian Baptism, the minister cannot have the intention of doing what the Catholic does.