Trinity: Christians interpret the Old Testament with a lens of the New Testament

Deuteronomy 6:4 - The Shema: "Hear, O Israel: The LORD our God, the LORD is one"

1)LORD, 2)God, 3)LORD is ONE

We read the Old Testament through the lens of New Testament revelation.

Jesus taught that the Scriptures find their meaning in Him. Luke 24:27 says He interpreted “in all the Scriptures the things concerning Himself.” Hebrews 1:1–2 explains that God spoke “in many times and various ways” through the prophets, but has now spoken definitively through His Son. Paul affirms in 2 Corinthians 3:14–16 that the veil over the Old Testament is removed only in Christ. Peter adds in 1 Peter 1:10–12 that the prophets were serving future generations as the plan of salvation unfolded.

Christ is key to understanding Old Testament prophecies.
Jesus claims fulfillment: “These are my words… everything written about me in the Law of Moses and the Prophets and the Psalms must be fulfilled” (Luke 24:44). Matthew anchors Jesus’ life repeatedly with “this happened to fulfill…” (Matthew 1:22–23; 2:5–6; 2:15; 2:17–18). Jesus applies messianic passages directly to Himself such as Isaiah 61 in Luke 4:18–21. Peter preaches that all the prophets pointed to the suffering and resurrection of Christ (Acts 3:18, 24).

Progressive revelation brings later clarity to earlier hints.
Hebrews 10:1 explains the law was a “shadow of the good things to come.” Colossians 2:16–17 says feasts and Sabbaths were “a shadow,” but “the substance belongs to Christ.” Ephesians 3:4–6 teaches that the mystery of Christ was “not made known” in earlier generations as it has now been revealed. John 1:17 contrasts Moses’ law with the fuller grace and truth in Jesus Christ. Galatians 3:23–25 describes the law as a guardian until Christ came.

The Trinity is revealed gradually across both Testaments.
Hints appear early: Genesis 1:26 says, “Let us make man in our image.” Isaiah 48:16 and Isaiah 61:1 show the Speaker, the Lord, and the Spirit in a shared work. Psalm 110:1 reveals the Lord speaking to the Lord, a key text Jesus uses in Matthew 22:41–46. Clear revelation comes in the New Testament: Jesus’ baptism shows Father, Son, and Spirit together (Matthew 3:16–17). The Great Commission commands baptism “in the name of the Father and of the Son and of the Holy Spirit” (Matthew 28:19). John 14–16 presents the mutual sending of the Son and the Spirit by the Father. Paul concludes with a Trinitarian blessing in 2 Corinthians 13:14.

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