The Catechism in Questions & Answers

490. What are the effects of Holy Baptism with water?

Holy Baptism with water signifies the end of a life in remoteness from God and the beginning of a life in Christ. It imparts strength to wage the battle against sin.
Baptism performed in the name of the Trinity is a binding element among Christians. Those baptised in the New Apostolic Church are entitled to partake regularly in Holy Communion.

Holy Baptism with water: see Questions 481. et seq. New covenant: see explanation of Question 175.

The term “Trinitarian” (Latin trinitas) refers to the divine Trinity. To be baptised in the name of the Trinity is to be baptised in the name of the triune God. The baptised is baptised using the so-called “Trinitarian formula”, that is, in the name of God, the Father, the Son, and the Holy Spirit.