A Biblical exposition
The greatest treasure we can hold in our hands is written Word of God, for heaven and earth shall pass away, but God’s Word remaineth for ever. His plan for humanity is revealed therein. The spoken Word came to the prophets and was written down. Later the apostles were the chosen witnesses. So we have both, the Old and the New Testament. In the Old Testament we find all the shadows, types and promises in the New we have the overwhelming record of how every Scriptures is being fulfilled to the letter. That is the convincing part of it.