Although the word Trinity never appears in Scripture, the biblical story points to it again and again. From the very beginning, the first name for God in Genesis 1:1 is Elohim—a plural noun used in a singular sense when referring to Israel’s God. Some scholars suggest this plurality reflects God’s abundance in attributes and sovereignty. Others see in it an early hint of His triune nature.
This plurality becomes more explicit in the creation of humanity:
“Then God said, ‘Let us make mankind in our image, in our likeness’” (Genesis 1:26).
Scripture identifies both the Spirit and the Son as present at creation. “The Spirit of God was hovering over the surface of the waters” (Genesis 1:2). Colossians 1:15–16 declares that Christ is the creator of all things. Together, Father, Son, and Spirit are the Elohim of creation—the singular plural God.
The Spirit in the Old Testament
The Spirit of God appears throughout the Old Testament as a powerful influence in people’s lives, though often temporarily. Saul received the Spirit when he became king, but the Spirit departed when he disobeyed (1 Samuel 16:14). David received the Spirit when Samuel anointed him as king. Again and again, the Spirit’s presence was real but fleeting, preparing the way for something greater to come.
The Trinity in the Gospel
The New Testament makes explicit what the Old Testament hinted: the gospel itself is Trinitarian. Each Person of the Godhead is uniquely involved:
The Father
- Author (Ephesians 3:8–9)
- Architect (Romans 1:1–2)
The Son
- Messenger (John 1:4, 17–18)
- Message (Romans 1:3, 9; Galatians 1:16)
The Holy Spirit
- Power (Romans 1:4; Acts 1:8)
- Proof (Romans 8:9, 14, 16)
The Spirit in the Life of Christ
God the Spirit is revealed throughout the ministry of God the Son. The Spirit was:
- The agent of Christ’s conception (Luke 1:35).
- Present at His baptism with the Father (Matthew 3:16).
- The One who led Him into the wilderness (Matthew 4:1).
- The power behind His teaching, ministry, and healing (Luke 4:14, 18; Acts 10:38).
- A central theme in His teaching, especially in the upper room (John 14, 16).
- The power behind His resurrection (Romans 1:4; 8:11; 1 Peter 3:18).
If the Spirit empowered Christ’s ministry, it should not surprise us that He empowers the gospel’s advance today.
The Spirit: Power and Proof of the Gospel
Power
- Convicts the heart (John 14:26).
- Brings about new birth (John 3:1–8).
- Drives the expansion of the gospel (Acts 1:8).
- Empowers the proclamation of Christ (1 Thessalonians 1:5; Romans 1:16).
Proof
As the gospel spread from Jerusalem to Judea, Samaria, and the nations (Acts 1:8), the Spirit confirmed its authenticity:
- Jews at Pentecost (Acts 2).
- Samaritans (Acts 8:14–17).
- Gentiles like Cornelius (Acts 10; 15:7–8).
At first, this proof came dramatically—through tongues and signs. But ultimately, Paul emphasizes that the true evidence of the gospel’s power is transformed lives (1 Thessalonians 1:5–10). The Thessalonians’ faith was visible in their perseverance under persecution, their imitation of Christ’s ways, their repentance from idols, and their eager anticipation of Christ’s return.
Evidence of the Spirit Today
That raises a vital question: What evidence marks authentic conversion now? Scripture points us to:
- Spirit-led living: sensitivity to His voice through the Word (Romans 8:14).
- Fruit of the Spirit: Christlike character (Galatians 5:22–23).
- Allegiance: loyalty to God’s kingdom authority (Colossians 1:13).
- Alignment: obedience to God’s will (1 John 2:3).
- Witness of the Spirit: the inner assurance of belonging to Christ (Romans 8:16).
The Gospel Reveals the Trinity
Each Person of the Trinity is essential to the gospel. This is why the Apostles’ Creed so strongly emphasized the triune God—it confirmed that the gospel reveals the Trinity, and the Trinity reveals the gospel. To know the gospel is to know the Father who planned it, the Son who embodied it, and the Spirit who empowers and proves it.
For Discussion
- In what ways did the Spirit’s work in the Old Testament differ from His role in the New Testament?
2. The article highlights the Spirit as both the power and the proof of the gospel. What biblical examples illustrate these roles?
3. How does the Spirit’s work of fruit (Galatians 5:22–23) differ from His work of gifts (Acts 2, 8, 10)? Which should we look to as lasting evidence of the gospel’s power?
4. What evidences of authentic conversion (Spirit-led living, fruit, allegiance, alignment, inner witness) do you find most encouraging—or most challenging—in your own walk with Christ?
5. How might understanding the Trinity more fully change the way you share the gospel with others?