Understanding Scripture

How Do the Old and New Testaments Relate to Each Other?

The Old Testament lays the foundation through God's covenant with Israel and the promise of a coming Messiah, while the New Testament reveals the fulfillment of that promise in Jesus Christ.

Published 2026-09-13 · Updated 2026-09-27

Written and reviewed by the Word Oasis Editorial Team. Read our editorial policy.

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Biblical explanation

Jesus Himself affirmed the unity of Scripture, saying that all things written of Him in the Law, Prophets, and Psalms must be fulfilled (). The sacrificial system, festivals, and prophecies of the Old Testament find their meaning in Christ, who is described as the Lamb of God () and the one who fulfilled rather than destroyed the Law (). Paul explains that the Old Testament writings were “written for our learning” () and remain profitable for teaching and correction (). Reading both Testaments together reveals one unified redemptive story, tracing God's plan from creation and the fall through the promise of a Redeemer to His arrival, death, resurrection, and coming return.

In brief

Jesus Himself affirmed the unity of Scripture, saying that all things written of Him in the Law, Prophets, and Psalms must be fulfilled ().

Bible references

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Editorial note

This answer is written and reviewed by the Word Oasis Editorial Team, and is presented with supporting references so you can examine each passage in context. If you notice an error or unclear statement, please suggest a correction.