Old and New does not mean useless and useful, nor does it divide the Bible into an angry God and a loving God. Both collections contain judgment and mercy, command and promise, human failure and divine faithfulness.
The Old and New Testaments are distinct collections within one Christian Bible. The New Testament depends deeply on Israel's Scriptures rather than replacing the need to read them.
What the Old Testament contains
The Protestant Old Testament has 39 books. It includes creation and ancestral narratives, Israel's deliverance and covenant, laws, national history, worship poetry, wisdom, prophetic warning, exile, and hope for restoration.
Jewish readers know these Scriptures through a different arrangement and naming structure, and other Christian traditions include additional Old Testament books.
What the New Testament contains
The 27 New Testament books include four Gospels, Acts, letters to churches and individuals, and Revelation. They concern Jesus' life, death, resurrection, the Spirit, the church's mission, Christian teaching, and future hope.
The books arise from the first-century Christian movement and repeatedly interpret events through Israel's Scriptures.
How covenant shapes the distinction
The names Old and New Testament are connected with biblical language about covenant. Christians understand Jesus in relation to the promised new covenant, while interpreting how earlier covenant commands apply through several theological frameworks.
The distinction should not erase the multiple covenants and developments already present within the Old Testament itself.
Continuity and development
The New Testament quotes the Old, assumes its stories, and uses its language for creation, sacrifice, kingdom, priesthood, wisdom, exile, and restoration. Without that background, much of the New Testament becomes thinner.
At the same time, Christians see decisive development in Jesus' work and the inclusion of Gentiles. Different traditions describe particular continuities and discontinuities differently.
How to read both together
First read a passage within its own book and historical horizon. Then follow explicit quotations, echoes, and themes into the other testament.
Avoid making the Old Testament merely a collection of predictions or the New Testament a set of detached spiritual statements. Each has its own voices and contributes to the whole canon.
A balanced reading path
- Read Genesis and one Gospel.
- Read Exodus alongside Acts.
- Read selected Psalms alongside a New Testament letter.
- Trace explicit Old Testament quotations in their original setting.
- Record both continuity and genuine development.