If I am a New Testament Christian, that is I’m under the new covenant, why should I read the Old Testament? As a reader of the entire Bible, I recognize that the question is short-sighted. It fails to listen to the testimony and evidence of the New Testament. Many reasons for reading the Old Testament alongside the New can be given.
- The New Testament quotes the Old Testament 96 times without indicating that it is a quotation. We are simply supposed to be familiar enough to recognize it. It cites the Old Testament 238 times with indications of it being a quotation, and it alludes to the Old Testament 1640 times.* Many times, it is helpful for us to be familiar with these passages in the Old Testament context to understand them in the New Testament. The New Testament also mentions by name over 100 people from the Old Testament.
- Luke reports of Jesus, “And beginning with Moses and all the Prophets, he interpreted to them in all the Scriptures the things concerning himself” (Luke 24:27, ESV). We cut ourselves off from some of the evidence for Jesus being the Christ, the Messiah, if we do not know the Old Testament prophecies concerning the Christ.
- Paul writes in Romans 15:4, “For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope” (ESV). The Old Testament scriptures still serves the New Testament people of God in encouraging endurance.
- Paul writes in 1 Corinthians 10:11, “Now these things happened to them as an example, but they were written down for our instruction, on whom the end of the ages has come” (ESV). Paul had just surveyed some of the history of the Exodus and Wilderness Wanderings. These Old Testament examples still instruct those under the new covenant. We see good examples to follow, and bad examples that warn us of the paths not to follow.
- Paul writes in 2 Timothy 3:16-17, “All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work” (ESV). He has reminded Timothy of the sacred scriptures that he had been acquainted with from his infancy. This is a clear reference to the Old Testament scriptures. So, all scriptures would include both the old and the new. The Old Testament still has a teaching, reproof, correction, and training role in our lives.
Clearly, we must distinguish between the covenants so that we properly understand our covenant obligations. Christians don’t practice animal sacrifices for example. But the New Testament itself gives us ample reasons to continue to read the Old Testament.
*Jeffrey Glen Jackson, New Testament Use of the Old Testament