Tom and Jason talk about the light and the lens necessary in order to fully understand the content in the Old Testament. In Old Testament times, the people who loved God had the light. That was sufficient for the needs of the people at that time. It did not, however, reveal with 100% clarity the truths contained within the Old Testament. The coming of Christ gave a particular lens to New Covenant believers allowing them to read the Old Testament based upon the coming of the Lord Jesus.