The entire Bible, from Genesis 1:1 to Revelation 22:21, is about Jesus Christ.

Let me give a few reasons why I believe that is the case, as well as a few clarifications about what that means.

First, reasons:

1. I suppose #1 ought to be the fact that Jesus says on numerous occasions that the Old Testament is about him. Below are a few examples:
   1. John 5:46 – “For if you believed Moses, you would believe me; for he wrote of me.”
   2. Luke 24:27 – “And beginning with Moses and all the Prophets, he interpreted to them in all the Scriptures the things concerning himself.”
   3. Luke 24:44-48 – “Then he said to them, “These are my words that I spoke to you while I was still with you, that everything written about me in the Law of Moses and the Prophets and the Psalms must be fulfilled.” Then he opened their minds to understand the Scriptures, and said to them, “Thus it is written, that the Christ should suffer and on the third day rise from the dead, and that repentance and forgiveness of sins should be proclaimed in his name to all nations, beginning from Jerusalem. You are witnesses of these things.”
   4. I am not saying here that literally every single verse of Scripture is about Jesus, nor do I think Jesus is, but more on that in the clarifications section.
2. If the entire OT doesn’t point to Christ, then why should Christians read it? What makes our reading any different from a Jewish reading? This probably should be a guiding question in how we discuss what the Old Testament is about. At the end of the day, if we can stand up on a Sunday morning and preach a sermon from the OT that would sound exactly the same as a message from a motivational speaker, then we need to ask ourselves if it is a truly Christian message. And the fundamental distinction between the Christian message and all other messages is that we believe Jesus is Lord through his righteous life, atoning death, death-shattering resurrection, ascension, Pentecost, and one day through his return and that the work of Christ has application for believers. If Christ’s person and work is not central to our message, and indeed to our Scriptures, what is the difference?
3. The entire Bible points to Christ because it is the Spirit’s job to testify to the Son so that through the Son we might see the Father. The assertion that the Bible is about Christ is a Trinitarian one, not a Christomonic one. The reason why the Bible is about Christ is because it is through Christ that we know the Father. The Spirit inspires the written Word to reveal the Incarnate Word so that through him we might know the Father.

4. 2 Tim. 3:14-15 clearly indicates that the Old Testament was able to make Timothy wise unto salvation in Christ. This is but one example in the entire New Testament where the authors of the epistles indicate that the Old Testament is a treasure trove of doctrine (not just Christology proper but also soteriology, hamartiology, etc.), doctrine that ultimately leads to Christ and salvation in him.

5. A related point to the previous sentence is that theology finds its hub in Christ. Again, this is not to be Christomonic, but simply to note that if we are talking about human beings, our image is summed up in Christ. If we are talking about sin, it is dealt with in Christ. If we are talking about the Spirit, his job is to testify to Christ and apply his work to our hearts. If we are talking about the church, we are his body, bought with his blood. If we are talking about eschatology, from an Old Testament perspective we’re looking for Christ’s first coming and from a New Testament perspective we’re looking for his second coming.

Now for some clarifications:

1. I am NOT saying that literally every verse in the Old Testament points to Christ. But that is also, in my mind, the incorrect way to phrase the issue. When the OT writers wrote their books, they were not splitting their work up into verses but instead viewed their book as an integrated whole with a unifying message. Further, they viewed their book as integrally related to whatever other parts of the OT were written at the time. They connected their books to previous Scripture and also connected the different parts of their own book(s) together. Both of these types of connections are textual – the authors of Scripture quoted, alluded to, and echoed previous Scripture to connect the message of their book with the message of the entire Bible. This means that even if one particular verse does not have much to say about Christ, it is still connected narratively and textually to the rest of the book and the entire Bible, which IS about Christ.
2. Some would object and say that there are points at which the human author of a book may not have intended for the passage to be as Christocentric/eschatological as we are reading it. Two things here:
   1. Per the previous point, the writers of Scripture ALWAYS connect the smaller parts to the larger whole, and thus if we pay attention to the literary context of the particular passage, we recognize that context as eschatological and Christocentric.
   2. The ultimate author of Scripture is the Holy Spirit, and he knows exactly why he’s inspiring the human author. Again, his job is to point to Christ, and so we should expect that he does so. Everywhere.
3. Finally, a Christocentric reading of Scripture does not preclude an emphasis on application. To the contrary, reading the Bible Christocentrically actually gives us proper grounding for application. For it is through knowing, seeing, and savoring Christ that we can properly respond to (apply) the Word of God to our lives. When we divorce application from intent, we’ve missed the intent of the Bible – to transform us into the image of Christ. And it is by seeing Christ that we are transformed into his image (2 Cor. 3:17-18). So for the Bible to be properly applicable it must be Christocentric.