I’m not quite sure why my Bible Study group has lately been concerned with more theological questions, but I suspect it’s because we have some relatively new believers who are discovering new questions they haven’t thought about before! It’s certainly true that as we navigate faith in a complex world, we often encounter profound truths that stretch our understanding. And one of the most central yet mysterious doctrines in Christianity is the Trinity: one God in three persons (or as I like to opine, three “characteristic personalities”) —Father, Son, and Holy Spirit.
The word “Trinity” does not appear in Scripture, but it captures the sense of how God has revealed Himself throughout the Bible. The Trinity is not a puzzle to solve but a reality to experience in our daily walk with Christ.
The foundation begins with the clear declaration of God’s unity. “Listen, O Israel! The LORD is our God, the LORD alone.” (Deuteronomy 6:4 NLT). This emphasizes that there is only one God, Yahweh. The Hebrew word for “one” here (echad) points to a compound unity rather than absolute singularity. God is not a collection of gods or divided parts, but one essence existing eternally in three distinct persons who are coequal and coeternal.
The Old Testament offers glimpses of this triune nature. In the very beginning, “The earth was formless and empty, and darkness covered the deep waters. And the Spirit of God was hovering over the surface of the waters.” (Genesis 1:2 NLT). Then God says, “Let us make human beings in our image, to be like us.” (Genesis 1:26 NLT). The plural language suggests the involvement of all three persons in creation. The Holy Spirit is active from the start, and appearances of the LORD, such as to Abraham in Genesis 18, hint at the pre-incarnate Son. A tantalizing Trinitarian hint comes in Isaiah: “Come closer, and listen to this. From the beginning I have told you plainly what would happen. And now the Sovereign LORD and his Spirit have sent me.” (Isaiah 48:16 NLT). These revelations build progressively throughout the Old Testament, preparing the way for full disclosure with the Incarnation of Jesus.
The New Testament upholds the oneness of God while revealing the distinct persons more clearly. Jesus boldly claimed divinity when He said, “I tell you the truth, before Abraham was even born, I Am!” (John 8:58 NLT), echoing God’s name given to Moses in Exodus. John’s Gospel opens with, “In the beginning the Word already existed. The Word was with God, and the Word was God.” (John 1:1 NLT). Of course, this Word is Jesus Christ, fully God and fully human—the God-man who entered history. Thomas worshiped Him as “My Lord and my God!” (John 20:28 NLT), and Jesus Himself declared, “Anyone who has seen me has seen the Father!” (John 14:9 NLT).
The Holy Spirit is equally divine, not an impersonal force but a person. Jesus promised, “But when the Father sends the Advocate as my representative—that is, the Holy Spirit—he will teach you everything and will remind you of everything I have told you.” (John 14:26 NLT). The Spirit shares the same attributes as the Father and Son: omniscience, omnipotence, and omnipresence. To lie to the Spirit is to lie to God (Acts 5:3-4). The Trinity works in perfect harmony, as seen at Jesus’ baptism and in the Great Commission: “Therefore, go and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit.” (Matthew 28:19 NLT).
It’s important to keep a balanced view of the Trinity and avoid extremes. For example, Tritheism splits God into three separate deities, while Unitarianism denies the full deity of the Son and Spirit. True biblical faith holds the unity of essence with the distinction of persons. The three Persons appear together in many passages, inviting us to worship the one true God as Father, Son, and Holy Spirit.
For us today, understanding the Trinity is not merely intellectual. It transforms how we experience salvation. Through personal faith in Jesus Christ, we enter relationship with the triune God. The early church lived in this awareness, as Paul prayed: “May the grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit be with you all.” (2 Corinthians 13:14 NLT). God’s grace is resistible yet freely available to every person. The Father draws us, the Son redeems us, and the Spirit empowers us—working together so that none need perish but all may come to repentance through responsive faith.
The Trinity reminds us that God is relational at His very core. As believers, we are invited to participate in this divine community—loving others as the Father loves the Son, empowered by the Spirit to live out our faith boldly. Those who reject the Trinity often do so because they struggle with the full deity of Christ and the Spirit, but Scripture consistently affirms it. Embracing this truth deepens our worship, strengthens our prayers, and fuels our mission to the world.
In the end, the triune God reveals Himself progressively, not only across redemptive history, but individually as we grow in His Grace. He remains one undivided God making the fullness of His love, grace and power available to us. We will not fully understand the full dimensions of this mystery until we experience etrnity, but in the meantime our growing understanding of who He is will draw us closer to Him who is worthy of all praise.
Blessings on you and yours, Jim Black
P.S. if you’d like to read previous ruminations of mine they can be found at https://blog.salvationarmyconcordca.org
Appendix: Scripture References (all from NLT)
- Deuteronomy 6:4
- Genesis 1:2
- Genesis 1:26
- Isaiah 48:16
- John 8:58
- John 1:1
- John 20:28
- John 14:9
- John 14:26
- Matthew 28:19
- 2 Corinthians 13:14
- Acts 5:3-4