Apart from Christ, the Old Testament has no meaning for us and holds no interest for us. It is an ancient book written for ancient Jews. What makes it relevant to us is that Jesus of Nazareth was an ancient Jew and He reinterpreted it such as way that we could see it testifying of Him. That’s what makes the Old Testament relevant to us.
The ancient Israelites heard God’s voice directly. It so frightened them that they begged Moses to be the go-between: that is, Moses would listen to God and then tell the Israelites what God had said. Likewise, Jesus brings to us the words of the Old Testament. If we cannot understand a passage through Him, we are not interested in hearing it – and this is as it should be.
Scripture quotations taken from the NASB, unless otherwise noted.