The unity of the Old and New Testaments is found in their common purpose and message, rather than the languages in which they were originally written. The Old Testament, primarily written in Hebrew, with parts in Aramaic, foretells the coming of the Messiah and establishes the foundation of God’s covenant with humanity. The New Testament, written in Greek, fulfills these prophecies through the life, death, and resurrection of Jesus Christ, and it expounds on the new covenant between God and His people.

Jesus himself emphasized the continuity between the Testaments. In the Gospel of Matthew, He says, “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them” (Matthew 5:17). This statement underscores the connection between the teachings and prophecies of the Old Testament and their fulfillment in the New Testament.

The apostle Paul also speaks to the unity of the Scriptures in his letter to Timothy, stating, “All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness” (2 Timothy 3:16). “All Scripture” includes both the Old and New Testaments, underscoring their combined value and divine inspiration despite the differences in language and cultural context.

Through the power of the Holy Spirit, the diverse writings of the Bible come together as a cohesive and unified message of God’s redemption plan for humanity. The Holy Spirit, who inspired the authors of both Testaments, transcends linguistic and cultural barriers, ensuring that the Bible’s message is understood and applicable across different times and languages.