By Joshua Steely
God the Father, Spirit, Son
Veiled in glory
One true God in Persons three
The last Sunday in May was Trinity Sunday, so I preached a sermon focused on the Trinity from the baptism of Jesus in Mark 1:9-11. It’s a powerful passage that displays God’s triune saving work.
A lot of Baptists, though, might think it a bit unusual to observe Trinity Sunday; we tend to leave this to our high-church brethren in other denominations. That’s a pity, because the doctrine of the Trinity is the vital heart of the Christian faith, and we should be regularly rejoicing in this great mystery. Here’s why:
First, God the Holy Trinity is the God we worship. Christianity is a relationship with God, and what is a relationship without knowing the other person (in this case, persons)? If the goal of our lives is to be near to God, to know him, then the Trinity is essential. Our prayer and worship, our personal relationship with God, is grounded in knowing him as God triune.
Second, God is our triune Savior. The doctrine of the Trinity is not only a biblical truth, it is a truth of Christian experience. God triune has saved us. When we were lost in sin and darkness, the Father sent the Son by the Spirit to rescue us. In the power of the Spirit, the Son lived a perfect human life in obedience to the Father. Having died for our sins, Jesus rose from the dead and sent the Spirit from the Father to indwell the hearts of believers. The Spirit living in us unites us with the Son by faith, for adoption as children of the Father.
Salvation is a thoroughly triune work, and we cannot understand redemption rightly without some understanding of the doctrine of the Trinity.
Third, God triune is the God who loves us abundantly and graciously. The Trinity tells us that relationship has always existed in the one God—there has been love between the Father, Son, and Spirit for all eternity. That means that God has never been lonely, and he loves us not because he needs us, but simply because that’s who he is—the God who loves. The wonder of God’s love is magnified when we grasp the mystery of the Trinity.
All glory be to God our King,
Lord of love, One in Three;
Hearts rejoice and voices sing
Praise for all eternity.
The Trinity cannot be left to professional theologians and pastors who read big books. It must be a vital element in the life and worship of the church. How do we make that happen?
1. Preach and teach on the Trinity. Now, don’t get the wrong idea—I’m not saying you should turn your Sunday morning sermon into a systematic theology lecture. Preach on the practical significance of the Trinity. Having a Sunday a year set apart for talking about it is a good habit. But more importantly, the Trinity should be explicitly present when we preach the gospel. Talk about the work of Christ as the saving work of the Father, Son, and Holy Spirit. Talk about salvation as being united with the Son by the Spirit for adoption as a child of the Father.
2. Shape the worship service to exalt the triune God. This doesn’t mean that every praise song has to be explicitly trinitarian. But if our worship service as a whole would be acceptable in a unitarian church, that’s a problem. We worship the one true God, the tri-personal God. Some of the old hymns are really good for this—“Holy, Holy, Holy!” is a standout example.
3. Encourage Trinitarian prayer and spirituality. The beginning of our spiritual life is marked by the Trinitarian baptismal formula—in the name of the Father, the Son, and the Holy Spirit. Carry that through into the everyday spiritual life of your church. In the public prayers of the worship service and in small groups and individual settings, model the practice of praying to the Father by the Spirit in the name of the Son. Talk (humbly) about the work of the Spirit in your life, about faith in the Son, and about the love of the Father.
Help the people in your church find devotional materials and insightful books that bring out the practical significance of the Trinity for Christian spirituality, like “Delighting in the Trinity” by Michael Reeves (IVP, 2012).
The Trinity is the heart of the Christian faith, the fundamental mystery of our great God. May our churches reflect the centrality of this awesome truth.
Joshua Steely is pastor of Pontoon Baptist Church in Pontoon Beach.