In today's Gospel, Jesus uses the Parable of the Dragnet to describe the Kingdom of God. The fish were divided into the good and the bad. The bad would be thrown away. When the end of time comes, the good and the bad would be clearly distinguishable.
We are not sure when the end of time would come, but even if we could live to be 100, we do not really have a lot of time. How do we make sure we would be in the right place? Do we try to make sure we could get confession and the last sacraments before we die? We are not sure if we would have the opportunity. We should resolve to live each day according to God's will by the power of Jesus.
After talking about the parable, Jesus describes how the truly learned disciple should be like. He would understand deeply about the treasure in the Old Testament, as well as the vision of the New. As Jesus said earlier, He had not come to destroy the traditions of the ‘old' Hebrew covenant but to fulfil it with a new covenant. When we read the Bible, we must not read just the Gospels and forget the Old Testament. Let us also remember that St. Augustine had said that "The New Testament lies hidden in the Old and the Old is unveiled in the New".