As Christ is the giver of the grace, He has the right to determine the manner in which it shall be given, and one who refuses to make use of the Sacraments will not receive God's grace. Q. 581.

What the Catechism of the Catholic Church says on "The Trinity:" 232. "Christians are baptized 'in the name of the Father and of the Son and of the Holy Spirit' [Mt 28:19.] Before receiving the ...