We believe in the triune God. He is the only true God. The festival of the Holy Trinity is a time to celebrate God revealing himself to us as one God in three persons. The triune God wants his people to teach this mystery in its biblical truth and purity. This festival of the Holy Trinity begins the second half of the Church Year with a proclamation of people being baptized and blessed in the name of the Father and of the Son and of the Holy Spirit, the only true God.