The Old Testament and the New Testament are the two main divisions of the Christian Bible.
The Old Testament is a collection of Jewish texts that were written before the birth of Jesus Christ. These texts include the Pentateuch (the first five books of the Bible, also known as the Torah), historical books, wisdom literature, and prophetic books. Christians believe that the Old Testament is inspired by God and that it contains prophecies and teachings that anticipate the coming of Jesus Christ.
The New Testament is a collection of texts that were written after the birth of Jesus Christ. These texts include the Gospels, which tell the story of Jesus’ life, death, and resurrection, as well as the Acts of the Apostles, which describes the early history of the Christian Church, and letters (or epistles) written by early Christian leaders, including Paul, Peter, James, and John. Christians believe that the New Testament is also inspired by God and that it contains teachings and revelation about Jesus Christ and the Christian faith.
The Old Testament and the New Testament are seen as having an interrelated relationship. The Old Testament is seen as laying the foundation and providing the background for the New Testament. In the New Testament, Jesus and his followers often refer to the Old Testament, interpreting and explaining its teachings in the light of his own teachings and the fulfillment of prophecy. Christianity sees Jesus as the long-awaited Messiah foretold in the Jewish Scriptures. The Christian religion therefore claims that the New Testament is a continuation, a completion and a fulfilment of the Old Testament. Through Jesus Christ and his teachings, the New Testament is seen as bringing a new era of understanding, forgiveness, and grace to the covenant God made with the Jews in the Old Testament.
Therefore, the relationship between the Old Testament and the New Testament is one of continuity and fulfillment, with the New Testament building upon and bringing new understanding to the teachings of the Old Testament.