Worshiping the God who is triune makes a substantial difference to what true worship actually is. The doctrine of the Trinity means that Christian worship is a sharing in the Son’s union with his Father, through the Holy Spirit. Our union with Christ in the power of the Holy Spirit is the basis for this sharing of God’s people together in the divine life of God. We stand to worship God by means of the mediatory ministry of Jesus before the Father, to which we are drawn by the fellowship of the Holy Spirit. As our great high priest, he sanctifies us by his blood, which he himself offered. This understanding of our relationship to the triune God was in part responsible for the Reformation’s rejection of the medieval concept of priesthood—since Christ is our supreme and exclusive mediator before God. As Torrance puts it, “The doctrine of the Trinity is the grammar of this participatory understanding of worship and prayer.”
–Michael P. Jensen, Reformation Anglican Worship:Experiencing Grace, Expressing Gratitude (Wheaton, Ill.: Crossway, 2021), p. 42