Now that Jesus had set the beatitudes of His new kingdom He wanted the people to understand that He wasn’t merely doing away with the Law and Prophets. Rather, He was the fulfillment of what was longed for in their pages. Notice the passion that Jesus has for the written word of God. I believe the Bible is inspired and infallible because thats they way that Jesus speaks of it. Jesus knew that everything God spoke was coming to pass and nothing could stop the will of the Father.