The Christian ought to believe that God’s oracles center around Christ because Jesus, the Christ, explicitly said that very thing. In an encounter with the Pharisees, recorded by the disciple John, Jesus dispelled the notion that the primary function of Scripture is to teach the law of God so that one could be righteous through holy living.
After His resurrection from the dead, Jesus made another explicit statement about the Christ-centered message of Scripture, during a conversation with His disciples.
The author of Hebrews told us that God’s oracles climaxed with the coming of Christ.
Prior to Jesus, God spoke to Israel through a series of prophets, and the prophets looked ahead to the coming of the Christ. When Jesus came, the prophets ceased, for the Messiah had been revealed, and their message was no longer needed. All that was needed was for the words and deeds of the Messiah to be written down for posterity, and that has happened thanks to the authors of the New Testament.
Believing that Jesus is the main focus of the Bible is key to accurately reading and comprehending the Bible. One of the easiest things to do is to forget that the book is primarily about Jesus. When one does this, when one forgets, the book often becomes about the reader. The reader goes to Scripture to extract principles for living a better life, just like the Pharisees did in Jesus’ day. This narcissistic reading can even happen when reading about Jesus – instead of focusing on the glory of Jesus and giving Him due praise, the reader instead studies the words and deeds of Christ, merely so they can try to mimic those qualities in their own life and become “a better person”.
Thankfully, the Holy Spirit gave us explicit references in Scripture, which prove the primacy of Christ, to help guard our hearts and minds as we approach God’s holy word. Since God desires His people to worship Him in spirit and in truth, we must read Scripture, the revealed word of God, accurately. As we increase in our comprehension of the Biblical narrative, and as we increase in our comprehension of our own sinful nature, we will learn that it is impossible to please God through our living of His law. It is only because of what Christ has done on our behalf, by dealing with our sin, that we can be pleasing to God. The redemption of mankind through the sacrificial death of Jesus of Nazareth is what the oracles of God all point to, in one way or another. The apostle Paul summarizes this great work well:
To rightly understand the gospel of grace, and not turn it into a gospel of works, one must understand that Jesus stands in the center of all of God’s revealed truths.